Strasbourg been populated since the middle Paleolithic. Between 362 and 1262, Strasbourg was governed by the bishops of Strasbourg; their rule was reinforced in 873 and then more in 982. In 1262, the citizens violently rebelled against the bishop's rule (Battle of Hausbergen) and Strasbourg became a free imperial city. It became a French city in 1681, after the conquest of Alsace by the armies of Louis XIV. In 1871, after the Franco-Prussian War, the city became German again, until 1918 (end of World War I), when it reverted to France. After the defeat of France in 1940 (World War II),
Institutional seats of the European Union less binding than the other seats. The 2011 Treaty Establishing the European Stability Mechanism (ESM) states that the seat of the ESM must be in Luxembourg. The ESM should be ratified and active in mid-2013 and it is allowed to establish a liaison office in Brussels. There are numerous other bodies and agencies that have not had their seats fixed by treaties. Brussels hosts the European Defence Agency (as NATO and formerly the WEU are also in the city). Luxembourg hosts the Translation Centre for the Bodies of the European Union and the European Investment Bank. Strasbourg and Brussels both