The United States of Belgium or more rarely the United States of the Netherlands, (French États-Unis de Belgique, Dutch Verenigde Nederlandse Staten), was a confederation of the Southern Netherlands, that existed during the year 1790. Other English translations are United Belgium States, United Belgian States or United Netherlands States. A confederation is an association of sovereign states, usually created by treaty but often later adopting a common constitution. ... The Southern Netherlands were a part of the Low Countries controlled by Spain (Spanish Netherlands, 1579-1713), Austria (Austrian Netherlands, 1713-1794) and France (1794-1815). ... 1790 was a common year starting on Friday (see link for calendar). ...

The Austrian Netherlands rebelled against the emperor as a result of Joseph II's centralizing policies. This civil uprising is called the Brabant revolution. The Battle of Turnhout (1789) lead to a defeat for the Austrians. The different countries declared independence and established the United States of Belgium (January 1790). Austrian imperial power was restored by Joseph's brother and successor, Leopold II by the end of 1790. Holy Roman Emperor Joseph II Joseph II (March 13, 1741 – February 20, 1790) was Holy Roman Emperor from 1765 to 1790. ... The Battle of Turnhout (1789) was a revolt against Netherlands began in the Kempen region. ... Holy Roman Emperor Leopold II Leopold II (born Peter Leopold Joseph) (Vienna, May 5, 1747 – Vienna, March 1, 1792) was Holy Roman Emperor from 1790 to 1792 and Grand-duke of Tuscany. ... 1790 was a common year starting on Friday (see link for calendar). ...

The Dutch oath of Abjuration in 1581 and the American declaration of independence in 1776 stood model for the treaty of the United Belgian States. The Oath of Abjuration or Plakkaat van Verlatinghe of July 26, 1581, was the formal declaration of independence of the northern Low Countries from the Spanish king, Philip II. This point meant a climax in the Dutch Revolt, a point of no return, in which the Low Countries asserted they... A declaration of independence is a proclamation of the independence of a newly formed or reformed independent state, usually from a part or the whole of the territory of another nation, or a document containing such a declaration. ...

Independently, in 1789, a civil uprising in the Bishopric of Liège, was an avatar of the French Revolution oriented against the Ancien Régime. The Prince-Bishop was invited to join the new constitution but he refused. The republic of Liège joined the United States of Belgium in a kind of alliance. The power of the Prince-Bishop was re-established in 1790 by the Austrians. 1789 was a common year starting on Thursday (see link for calendar). ... The Bishopric of Liège or Prince-Bishopric of Liège was a state of the Holy Roman Empire in present Belgium. ... During the French Revolution (1789-1799) democracy and republicanism replaced the absolute monarchy in France, and the French sector of the Roman Catholic Church was forced to undergo radical restructuring. ... Ancien Régime means Old Rule or Old Order in French; in English, the term refers primarily to the social and political system established in France under the Valois and Bourbon dynasties. ... Liège (Dutch: Luik, German: Lüttich; before 1946, the citys name was written Liége, with the acute accent) is a major city located in the Belgian province of Liège, of which it is the capital. ... 1790 was a common year starting on Friday (see link for calendar). ...