USA HISTORY

Detailed explanation-1: -The Russian, German, Austria-Hungarian and Ottoman empires all collapsed during or shortly after the war, which ended with a treaty that ceded Germany’s overseas colonies to the victors.

Detailed explanation-2: -Britain’s world power position had taken centuries to obtain. The events that led to the collapse of the British Empire were catastrophic for almost everyone in Europe: two world wars and 20 years between near-total economic and international chaos.

Detailed explanation-3: -As many as 8.5 million soldiers and some 13 million civilians died during World War I. Four imperial dynasties collapsed as a result of the war: the Habsburgs of Austria-Hungary, the Hohenzollerns of Germany, the sultanate of the Ottoman Empire, and the Romanovs of Russia.

Detailed explanation-4: -Four empires collapsed: the Russian Empire in 1917, the German and the Austro-Hungarian in 1918, and the Ottoman in 1922.