^Liège was neutral during the Eighty Years' War, but its neutrality was violated by the Dutch occupation of Huy in 1595. The prince-bishop of Liège appealed to the Spanish governor in Brussels for aid in driving the Dutch out, which was granted, after which the city was restored to Liégeois control.
^Portugal declared its independence from Spain in 1640, triggering the Portuguese Restoration War. Although the Portuguese were already engaged in the Dutch–Portuguese War since 1602, they agreed to a 10-year truce with the Dutch Republic in Europe (1640–1650) while both were fighting for independence from Spain; nevertheless, the colonial war between the Portuguese and the Dutch West India Company (WIC) in the Americas (especially Dutch Brazil) continued.
^Stavelot-Malmedy was neutral during most wars, but in 1689 severely attacked by France.
^Holy Roman Emperor Francis II of Habsburg proclaimed the Austrian Empire on 11 August 1804, elevating the Habsburg monarchy to imperial status by himself. The indirect causes of this move are the French conquest of the Rhineland and further expansion into Germany and the Reichsdeputationshauptschluss of 1803, which curbed the meaning and power of the Holy Roman Empire/Emperor. The direct cause of Francis' proclamation was the adoption of the new French Constitution of 18 May 1804, which appointed Napoleon as Emperor of the French (followed by his coronation on 2 December 1804). Instead of an increasingly meaningless and non-hereditary title that was dependent on the cooperation of the Electors and was limited to only the northwestern parts of his Hausmacht, Francis now made all Austrian Habsburg possessions into a unified hereditary empire.
^Duchy of Warsaw as a state was in effect fully occupied by Russian and Prussian forces by May 1813, although most Poles remained loyal to Napoleon.
^Many member states of the Confederation of the Rhine defected after Battle of Leipzig.