The national name Prussia at different times has denoted a geographical region, a dukedom, a Polish province, a Polish fief, a kingdom under Brandenburg's rule which became the leading kingdom of the German Empire (comprising in its last form almost two-thirds of the Germany's area) and as republic state of Germany. Surrounding but excluding the national capital Berlin, Brandenburg is one of Germanys sixteen Bundesländer (federal states). ... Flag of the German Empire, 1871–1919: black-white-red The term German Empire commonly refers to Germany, from its foundation as a unified nation-state on January 18, 1871, until the abdication of Emperor Wilhelm II on November 9, 1918. ...

The word Prussia can refer to:

• the land of the Prussian people (6th-13th centuries) Map of Prussia before teutonic invasion: http://prusa.strefa.pl/nertiks/papaausai/taautaskarti/istooriska.html
• Teutonic Knights' or Teutonic Order state (13th-15th centuries)
• Royal Prussia and Ducal Prussia forming together the Prussian province of Poland, 15th century-1660
• Kingdom of Prussia, independent 1701-1871, and as a constituent of the German Empire, 1871-1918
• Prussia (state), a "free state" of the German Republic, 1918-1933
• West Prussia (since 1772) and East Prussia (since 1618), provinces of the State or Kingdom of Prussia, 1701-1933

The Prussians kill Adalbert The Prussian people, or (old) Prussians, inhabited the area around the Curonian and Vistula Lagoons, (in what is now northern Poland), in the region roughly occupied by the Mazurian Lakes. ... Teutonic Knights, charging into battle. ... In 1220 Prussians invaded territories of Conrad of Masovia, in reaction Conrad called on the pope and the emperor for a Crusade. ... Map of Royal Prussia Royal Prussia (Polish: Prusy Królewskie, German: Königliches Preussen) was a Polish province formed from the western part of the Lands of the Teutonic Order following the Thirteen Years War or War of the Cities. During the war, the Prussian Confederation, led by the cities... Ethnic map Ducal Prussia was, between 1525–1657, a fief of Poland. ... The Province of Prussia was a province of Poland from the 15th century until 1660, consisting of Royal Prussia and Ducal Prussia. ... Flag of Prussia (1894 - 1918) The Kingdom of Prussia existed from 1701 until 1918, and from 1871 was the leading kingdom of the German Empire, comprising in its last form almost two-thirds of the area of the Empire. ... The coat of arms of the Kingdom of Prussia, 1701-1918 The word Prussia (German: Preußen or Preussen, Polish: Prusy, Lithuanian: Prusai, Latin: Borussia) has had various (often contradictory) meanings: The land of the Baltic Prussians (in what is now parts of southern Lithuania, the Kaliningrad exclave of Russia and... West Prussia was a province (1772–1824 and 1878–1918) of the Kingdom of Prussia. ... East Prussia (German: Ostpreu en; Polish: Prusy Wschodnie; Russian: Восточная Пруссия — Vostochnaya Prussiya) was a province of Kingdom of Prussia, situated on the territory of former Ducal Prussia. ...

See also

• Old Prussian language
• Prussian Confederation