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This is a timeline of key events in the history of Slovenia and the nations that lived and live on Slovene ethnic territory, mostly Slovenes. ¹ We might start with Kobal's words:

History, unlike mathematics, is an imperfect science and can never be complete or totally impartial. Ivan Kobal

1300s BC

NOTE a theory about connections between the Veneti and Proto-Slovenes is believed to be speculative or even pseudohistorical.

• Circa 1300 BC - The Veneti (Venedes) ('Venetkeni', 'Venetkini', 'Venedi', 'Vinedi', 'Vendi', (Jordanes 'Venethi'), 'Sclavi', 'Sclavini', (Jordanes 'Sclaveni'), 'Slovonici') (Greek Venedes, Homer shortened the name to 'Enetoi', Jordanes wrote 'Ainetoi' ("Laudable")) | (also Wenets, Veneds, Venets, Wenetes) (not to be confused with Venetians or Venicians), the Proto-Slavs (Proto-Slovenes, Slo-veneti, Sloventi), an Aryan folk from Sorbian (Lusatian (Lusation), Wendish) culture along the Amber Road conquer and settle region between the Baltic and Adriatic Sea.

1200s BC

• Circa 1200 BC - The Veneti, the bearers of the Urnfield culture, come from the north and settle in the Alpine area of Slovenia, northern Italy, eastern Switzerland and Austria during the Late Bronze Age.

1100s BC

• Circa 1150 BC - The Veneti from Paphlagonia, a region in today's northern Turkey on the Black Sea, continued East across Persia and Afghanistan after the defeat of Troy reach Punjab across the Khyber mountain pass (1022 m). ^2Z Homer talks about the Venets, and so do the Greeks, using the name Henetoi. Roman historians claim their leader was Antenor (Antenore), originated from Troy.
• 1100 BC - The new combined nation, known until today by the name of Aryans or Hindi, was able to penetrate towards East to the river valley of the Ganges and conquered the whole area up to the Himalayas. A new vast country came into existence, which still today carries the name Hindustran (like Heneti - Veneti). India - actually Vindia - was born.

800s BC

• Before 800 BC - The Etruscans (Etrurians, Rasenna (Raseni)), a non-Aryan folk migrate into northern and central Italy from the eastern steppes or acording to Herodotus from Lydia. ^2Y

400s BC

• - A well-developed Illyrian population center exists as far north as the upper Sava valley in what is now Slovenia. Illyrian friezes discovered near the present-day Slovene city of Ljubljana depict ritual sacrifices, feasts, battles, sporting events, and other activities.

200s BC

• Circa 250 BC - The Celtic Tene Culture comes to the Slovene territory and replaces the Hallstatt Culture.
• 221 BC - the border of the Roman Republic arrives at the Julian Alps.

100s BC

• 178 BC - Romans conquer Histria.

0s BC

• 48 BC - Noricans takes the side of the Roman caesar Julius Caesar (circa 100 BC-44 BC) in the civil war against Pompey (106 BC-48 BC).
• 16 BC - Noricans having joined with the Pannonians in invading Histria, they are defeated by Publius Silius, proconsul of Illyricum.
• 12 BC - The army of Romans, led by Tiberius (42 BC-37, reigned 14-37), starts conquering Pannonia.
• 9 BC - Pannonia is subdued and incorporated with Illyricum, the frontier of which was thus extended as far as the Danube.

1s

Slovenia under the Roman Empire

• 7 - Pannonians, with the Dalmatians and other Illyrian tribes, revolt, and are overcome by Tiberius and Germanicus (15 BC-19), after a hard-fought campaign which lasted for two years.
• 9 - The Roman Empire finally conquers Pannonia (which includes the biggest part of present-day Slovenia). Roman legions stay in Poetovio (currently Ptuj).
• Circa 40 - The Noricum Kingdom is ultimately incorporated to the Roman Empire by the Roman caesar Claudius (10 BC-54, reigned 41-54). Noricum includes Carinthia and most of Styria. From now on the whole of the Slovene lands is within the borders of the Roman Empire.
• 46 - Celje gets its municipal rights under the name municipium Claudia Celeia.

100s

• Not later than 103 - Roman caesar Trajan (53-117, reigned 98-117) moves the Legio XIII Gemina to the north border in Karnunt (Carnuntum) (today Deutsch Altenburg in Lower Austria) in Pannonia along the Danube River.

200s

• Circa 290 - Noricum is divided under Roman Emperor Diocletian (245-313, reigned 284-305) into Noricum ripense (along the Danube) and mediterranean (the southern mountainous district).

300s

• Circa 320 - Celeia is incorporated with Aquileia (Oglej) under Roman Emperor Constantine I. (272-337, reigned 307-337).

400s

• Circa 400 - St. Jerome hypothetically translates some writings in a Slovene dialect of Proto-Slavic into Latin.

500s

• Circa 500/550 to 570/592 - The ancestors of Slovenes settle in Eastern Alps (Julian Alps, Karavanke), occupying an area more than twice the size of today's Slovenia.
• Circa 551 - An Ostrogothic historian Jordanes writes in The origin and deeds of the Goths ³ about 3 nations 'Veneti' ('Wenethi'), 'Sklavens' ('Sclaveni', 'Slevene' ?) and probably the east (or south Slavs), the bravest nation among them called Antes (Greek Antae, Russian/Ukrainian Anty, Slovene Anti). All his three terms might also be just synonyms for one nation. Jordanes actually states that there are three names for Wenethi - Wenethi, Antes and Sclaveni (Jordanes, Getica, ch. XXIII).

• 568 - The Langobards from the margin of Pannonia break and move into Italy. The independent Slovene state possibly appears in the Eastern Alpine area (provincia Sclaborum), later named in sources as Sclauinia or Karantania.
• 595 - According to Paul the Deacon, who was a medieval Lombard chronicler, in 595 Tassilo, king of Bavarians, attacked 'the province of Sclabi'. Some consider it the first mentioning of the Karantania state. ^2X

600s

• 610 - Avars attempt to invade Italy.
• 612 - John Babbiensis in the biography of St. Columbus specifically names Slovenian Slavs 'Veneti'.
• 623 - The formation of Samo's state.
• 625 - Uprising of 'west' Slavs led by Samo against Avars.
• 631 - The Battle of Wogastisburg (probably Forchheim) between Samo's army and Austrasian forces, led by Merovingian king Dagobert I of the Franks (603-639, reigned 629-639).
• 658 - Samo's death. The Slav tribal union collapses but a smaller Karantania persists.

700s

• 745 - Karantania loses its independence and becomes a margraviate and tantamount part of the semifeudal Frankish empire later under the rule of king Charlemagne (742-814, reigned 771-814) due to pressing danger of Avar tribes from the east.

800s

• 803 - Christian Church divides Slovene territory along the Drava river between the Salzburg archdiocese and the Patriarchate of Aquileia.
• 840 - the Balaton Principality emerges in Pannonia.
• 843 - Karantania passes into the hands of Louis the German (804-876).
• 871 - The earliest written record of the ancient Karantanian ritual of installing dukes "Conversio Bagoariorum et Carantanorum", where is written: ... illi eum ducem fecerunt... (they were made dukes).
• 876 - The principality of Prince Kocelj (Balaton Principality) loses its independence.
• 887 - Arnulf of Carinthia (850-899) a grandson of Louis the German assumes his title of King of the East Franks and becomes the first Duke of Carinthia.
• 894/895 - Great Moravia probably loses a part of its territory - present-day Western Hungary- to Arnulf of Carinthia, who failed to conquer Great Moravia in 892, 893, 894/895 and 899
• 895 - Accord between Arnulf of Carinthia and the Bohemian Duke Borivoj (reigned 870-895), Bohemia is freed from the danger of invasion.
• 896 - The Magyars from Asia, led by �rp�d, settle in the region around the Theiss River (Hungary)
• 899 December 8 - Arnulf of Carinthia dies.

900s

• Circa 906 - Invading Magyars destroy the weakened empire of Moravia.
• 907 - Slovene territory is settled by the Magyars.
• 952-1180 - The Great Karantania.
• 955 - German king Otto I (912-973, reigned 936-973) defeats the Magyars at the Battle of Lechfeld near Augsburg, halting their advance in Central Europe, The Austrian March is established.
• 976 - Karantania becomes a duchy in its own right, including Styria and today's East Tirol.

1000s

• 1000 - Carinthia, Styria and Carniola provinces emerging on a territory of Karantania.
• 1122-1137 - The first mention of Celje in the early Middle Ages under the name of Cylie in Admont's Chronicle,
• Circa 1142 - Herman of Carinthia (circa 1100-circa 1160) in Le�n among other begins to translate the Qur'an into Latin.
• 1144 - The first records mentions Ljubljana by its modern name (by its German name Laibach).
• 1146 - Ljubljana is mentioned by the name Luwigana.
• 1168 - The temple of Svetovid (Svantevit, Sventovit or perhaps even Vsetovid, probably the same as Strabo's Diomed, Venethic Belin) in Arcona on the island of R�gen (Rujana) in the Baltic Sea is destroyed by the Danish king Valdemar the Great (1131-1182, reigned 1157-1182).

1200s

• 1220 - Ljubljana receives its town rights.
• 1269 - The Karantanian dynasty becomes extinct.
• 1273 October 24 - Habsburg count Rudolph I. (1218-1291) is crowned in Aix-la-Chapelle (Aachen) as a German king.
• 1274 - Bohemian king Ottokar II. (reigned as a king 1253-1278) a candidate for the German throne refuses to appear or to restore the provinces of Austria, Styria, Carinthia and Carniola which he had seized. The way he got named provinces they believed was contentious.
• 1278 August 26 - Battle of D�rnkrut and Jedenspeigen between Ottokar II. and Rudolph I. allianced with the Hungarian king Ladislaus IV. Ottokar is defeated and killed.
• 1282 - The rule of Habsburg dukes over most Slovene lands begins.

1300s

• 1335 - The Duchy of Carinthia is bestowed by Louis the Bavarian on the dukes of Austria.

1400s

• 1414 - The Habsburg Duke Ernest the Iron (1377-1424) thrones according to the ancient Karantanian ritual of installing dukes on the Duke's Stone and he addresses again as an archduke.
• 1451 April 11 - Celje acquires town rights by orders from Celje count Frederic II (Friderik II).
• 1461 - Ljubljana becomes the seat of the diocese.
• 1473 - The city walls and defensive moat are built in Celje.

1500s

• 1511 - Ljubljana is devastated by earthquake.
• 1550 - The first book in Slovene is printed. Primož Trubar's primer entitled Abecedarium and a catechism.
• 1584 - The Bible is translated into Slovene by Jurij Dalmatin.

1600s

• 1693 - A scholarly society Academia operosorum Labacensis is established in Ljubljana.

1700s

• 1701 - The Philharmonic Society (Academia philharmonicorum) is established in Ljubljana.

1800s

• 1809 - The Lower Carinthia incorporates to France as Dutchy of Carinthia was divided into two parts, Upper or Western Carinthia and Lower or Eastern.

1810s

• 1813 - The Lower Carinthia is reconqured.

1820s

• 1821 - Congress of Laibach takes place in Ljubljana.

1830s

• 1838 - First works, tracings on Slovene territory of a railway route Vienna - Trieste in a so called "Southern Railway" (Južna železnica) begin.

1840s

• 1845 - First works on the "Southern Railway" between Celje and Ljubljana begin,
• 1846 April 27- First locomotive of the "Southern Railway" comes to Celje.
• 1846 May 18 - Trial run of the first train on the "Southern Railway" to Celje is performed.
• 1846 June 2 - The "Southern Railway" to Celje is open for public.
• 1848 - The United Slovenia (Zedinjena Slovenija), the first Slovene political programme rises.
• 1848 April 18 - The Ljubljana railway station is finished.
• 1849 August 18 - First locomotive arrives at Ljubljana railway station.
• 1849 September 16- First train of the "Southern Railway" arrives in Ljubljana.
• 1849 September 19 - "Southern Railway" to Ljubljana is ceremonially opened.
• 1849 - The Duchy of Carinthia is created as a separate crownland.

1850s

• 1850 May 14 - Emperor Francis Joseph lays the foundation stone of Trieste railway station.
• 1851 - Society of St. Hermagoras (Mohorjeva družba) first Slovene publisher is established in Klagenfurt (Celovec), which publishes books in Slovene.
• 1857 July 18 - The "Carinthian railway" between Maribor and Klagenfurt is being bult.
• 1857 July 27 - The "Southern Railway" is completed and opened.

1860s

• 1862 November 12 - The railway line of the "Carintnhian railway" on the route Maribor - Vuzenica is built.
• 1863 - May 31 - The "Carinthian railway" is built
• 1864 - The Kozler brothers establish the Pivovarna Union (The Union Brewery).
• 1869 May 17 - Rally at Vižmarje near Ljubljana gathers around 30,000 people where programme of the United Slovenia is demanded.

1880s

• 1889 July - Strike of coal miners of the Zasavje distrincts in Zagorje and Trbovlje.

1890s

• 1890 May 1 - Labour Day is celebrated first time.
• 1890 - The railway line on the route Radgona - Ljutomer is built.
• 1891 - The railway line on the route Ljubljana - Kamnik is built.
• 1891 - The railway line on the route Celje - Velenje is built.
• 1894 - First public power station in Škofja Loka is built.
• 1894 - The railway line on the route Ljubljana - Novo mesto is built.
• 1895 - People's loan bank (Ljudska posojilnica) is founded by Catholic middle class.
• 1895 - Ljubljana is devastated by earthquake.
• 1896 - The National hall (Narodni dom) is built in Celje.
• 1898 - The railway line on the route Ljubljana - Kočevje is built.
• 1899 - The railway line on the route Velenje - Dravograd is built.

1900s

• 1900 - Liberal middle class founds the first Slovene bank, The Credit bank of Ljubljana (Ljubljanska kreditna banka).
• 1902 - First telephone is mounted in Celje.
• 1907 - Electricity is used in a lead mine in Mežica.
• 1907 - The Celje hall (Celjski dom) is built in Celje.
• 1908 - The "Karavanke railway" is built.

1910s

• 1912 - The Preporod (Rebirth), a juvenile movement is established. Many members have political connections with the pro-Serb organization Young Bosnia (Mlada Bosna).
• 1912-1915 - A hydroelectric station in Završnica (2500 kW) is being built.
• 1913 April 12 - Ivan Cankar in Ljubljana gives a speech Slovenes and Yugoslavs for the socialist society Vzajemnost (Mutuality) about Slovenes to unite politically but not culturally with other South Slavs and Yugoslavism.
• 1913 - Celje is electrified. Westen's dishes factory uses electricity in industry.
• 1914 - The railway on the route Novo mesto - Karlovac begins to run.
• 1914 June 28 - Austrian Archduke Franc Ferdinand a heir to the Austrian throne and his wife Countess Sophie are killed in Sarajevo, Bosnia at the hands of a pro-Serb nationalist assassin (a Bosnian Serb student Gavrilo Princip, a member of the Young Bosnia) -- World War I begins.
• 1915-1918 - The Soča River front. In 11 Soča offensives Italians captured just Gorizia (Gorica) and a few frontier sites. On these battlefields many Slovenes in Austro-Hungarian army died (for example at Doberdob).
• 1917 May 30 - May Declaration of Slovene, Croatian and Serb representatives in the Vienna parliament signed by Anton Korošec about arrangement of a unified common state of Slovenes, Croats, and Serbs living within the Habsburg monarchy.
• 1917 July 20 - The Corfu Declaration is signed between the Yugoslav committee (Jugoslovanski odbor) and the Serb government and becomes the basis for the formation of the Yugoslav state.
• 1917 October 24 - November 9 - The Battle of Kobarid between Austrian forces, reinforced by German units and the Italian army. The Italian army withdraws to the river Piave and only the military assistance of Britishers and Frenchmen saves them from a total break.
• 1918 October 6 - National Council of Slovenes, Croats, and Serbs is established in Zagreb. It becomes the political representative body of South Slavs in Austria-Hungary.
• 1918 October 29 - National Council of Slovenes, Croats, and Serbs breaks off all relations with Austria-Hungary and proclaims a short-lived State of Slovenes, Croats and Serbs. Slovenia joins a new state with an independent State authority. The state is not recognized internationally.
• 1918 November 1 - General Rudolf Maister takes over the authority of the Maribor garrison.
• 1918 November 3 - Austria-Hungary surrenders.
• 1918 November 18 - Germany surrenders. World War I ends.
• 1918 December 1 - The State of Slovenes, Croats and Serbs joins with the Kingdom of Serbia and the Kingdom of Montenegro to the Kingdom of Serbs, Croats and Slovenes (SHS). Today it is believed that this was a great historical fault although at that time this was probably the only sensible decision because Italy according to the London Pact with victorius entente forces from 1915 without bias occupied Primorska, Istria (Istra) and Zadar in Dalmatia and Serbia was forcing for unification.
• 1918 - Nitrogen factory (Tovarna dušika) in Ruše is built.
• 1918 - A hydroelectric station Fala on the Drave river (31.150 kW) is built.
• 1919 January 18 - The Paris Peace Conference begins. Woodrow Wilson gives his "14 Points" address. The 9th and the 10th are crucial for Slovenes within former Austro-Hungarian borders.
• 1919 June 28 - The Treaty of Versailles is signed between Germany and victorious three Entente powers.
• 1919 September 10 - The Treaty of Saint-Germain with republic of Austria. It confirms the break of Austria-Hungary. Its territory comes down to newly formed countries Austria, Hungary, Czechoslovakia, Poland, Romania, and the Kingdom of Serbs, Croats and Slovenes. South Tirol with mainly German population falls to Italy.
• 1919 - The University of Ljubljana (Univerza v Ljubljani) is established.

1920s

• 1920 June 4 - The Treaty of Trianon with Hungary Burgenland (Gradiščansko) falls to Austria and Transmuraland (Prekmurje) to the Kingdom of Serbs, Croats and Slovenes.
• 1920 July 13 - Croatian National hall in Pula and Slovene national hall in Trieste are burried by Italian fascists.
• 1920 August 14 - A security agreement is signed between Czechoslovakia and the Kingdom of Serbs, Croats and Slovenes.
• 1920 October 10 - Carinthian Plebiscite.
• 1920 November 12 - The Treaty of Rapallo between Italy and the Kingdom of Serbs, Croats and Slovenes, where Slovenia loses almost the whole province of Primorska, which is incorporated back again after the 2nd World War. Italy also gets the whole Istria together with the Trieste region (Tržaško).
• 1920 - The "Kulturbund" - a cultural and educational organization of German national minority is established. Later becomes the nazi organization, which operates in Yugoslavia as a fifth column.
• 1921 June 28 - St. Vitus Day Constitution (Vidovdanska ustava) is adopted. It legalizes a monarchal regulation and centralism in a new state and also the supremacy of the court and the Serb politics linked with it.
• 1921 July - An allied treaty for insurance of a situation in East Europe, attained in the Paris Peace Conference, is made by Romania and the Kingdom of Serbs, Croats and Slovenes. This alliance supplements the security agreement between Czechoslovakia and the Kingdom of Serbs, Croats and Slovenes and gets the name "Small entente".
• 1922 - Julian March (Julijska krajina) is incorporated to Italy.
• 1923 March - Prefect of Julian March interdicts Slovene and Croatian language at the administration.
• 1925 October 15 - Italian king issues a decree, which interdicts Slovene and Croatian language also at courts of justice.
• 1927 - Founding of the TIGR at Goriško, Slovene anti-fascist organisation, first such European organization and a secret youth organization Borba (The fight) at the Trieste region.
• 1929 January 6 - The king Alexander I. with a coup d'�tat dissolves the parliament and establishes the January 6th Dictatorship. He abolishes the St. Vitus Day constitution, freedom of the press and the pooling rights.
• 1929 October 3 - The king Alexander I renames the Kingdom of Serbs, Croats and Slovenes as the Kingdom of Yugoslavia. All political parties are prohibited.

1930s

• 1930 - Italian fascists discover some TIGR's cells and five members of TIGR (other sources of Borba) are killed at Bazovica.
• 1931 May 9 - To hide a dictatorship the king Alexander I. initiates the bestowal constitution, which introduces the two-chamber parliament.
• 1933 February 16 - The "Small entente" between Romania, the Kingdom of Yugoslavia and Czechoslovakia.
• 1934 February 9 - The "Balkan entente" between Romania, the Kingdom of Yugoslavia, Greece and Turkey.
• 1934 October 9- The king Alexander I. Karadžordžević, who reigned since 1921, is assassinated in Marseille together with a French foreign minister Louis Barthou by Croatian extremist nationalists.
• 1935 - Prime minister becomes Milan Stojadinović. His government begins to drop a traditional leaning toward France and starts to connect economically and politically with Germany and Italy.
• 1937 - The National Academy of Sciences and Arts is established in Ljubljana.
• 1938 March 13 - Adolf Hitler annexes Austria to the German Third Reich. Slovenes in Austrian Carinthia practically become German citizens.
• 1938 - Some members of TIGR plan an attempt on Mussolini's life, when he visits Kobarid.
• 1938 December - Prime minister becomes Dragiša Cvetković. He signs an agreement with the leader of Croatian opposition Vlatko Maček about the foundation of Croatian banovina as the sole autonomous political and territorial unit in the Kingdom of Yugoslavia. This agreement does not solve the national problem since it just distributes the authority among Serbs and Croats.

1940s

• 1941 March 1 - Dolomite declaration.
• 1941 April 6 - German, Italian and Hungarian occupying forces occupy Slovenia and divide it into three parts. One of the darkest times of the Slovene history begins.
• 1941 April 11 - German army occupies the Zasavje districts, where important pits, heavy industry and traffic crossroads lie.
• 1941 April 17 - Royal Yugoslav army signs its surrender in Belgrade.
• 1941 April 19 - A Nazi politician and SS chief leader Heinrich Himmler visits Celje and among other he inspects the prison of the Stari pisker ("Old pot").
• 1941 April 26 - An anti-fascist organization, the Liberation Front of Slovene nation (Osvobodilna fronta Slovenskega ljudstva) (OF) is established in Ljubljana. It is active on all Slovene ethnical territory, as well in Carinthia, Primorska region in the Venetian province and Slovene Raba region (Slovene Slovensko Porabje, Hungarian Szlov�n-vid�k or R�ba-vid�k).
• 1941 May 8 - A decision about the organization of the OF in the Zasavje districts in Trbovlje, Zagorje and Hrastnik is adopted.
• 1941 July - Armed resistance begins.
• 1941 August 1 - The first Slovene partisan unit in the Zasavje distrincts, the Revirje company (Revirska četa) is established at the Čemšeniška Alpine meadow. 70 fighters were counted.
• 1941 December 12 - A battle between German policemen and Slovene partisans near the village of Rovte.
• 1943 September 16 - The supreme plenum of OF proclaims the association of Slovene maritime province (Slovensko primorje) to Slovenia.