Editing Universe-A (section)

==== ''[[World War I]]'' ====
World War I, lasting from 1914 to 1918, began with the assassination of Archduke [[:wikipedia:Francis Ferdinand|Francis Ferdinand]] of [[Austria]] on June 28, 1914, sparking [[Austria-Hungary]]'s declaration of war on [[Serbia]]. This conflict quickly escalated as major European powers aligned, with [[Germany]] declaring war on [[Russia]] and [[France]] and invading [[Luxembourg]] and [[Belgium]]. By August, [[United Kingdom|Britain]] joined against Germany, marking the expansion of hostilities across [[Europe]]. Key battles ensued, including the [[:wikipedia:First Battle of Ypres|First Battle of Ypres]] and [[:wikipedia:Battle of Mons|Battle of Mons]] in 1914. In subsequent years, notable battles like Verdun, Jutland, and the Somme demonstrated the scale and devastation of trench warfare. [[United States|U.S.]] involvement in 1917 marked a turning point, as the [[Allies of World War I|Allies]] launched final offensives in 1918, culminating in an armistice signed by Germany on November 11, 1918.