1. The Central Powers
World War I Collapse and The
Aftermath of War

2. 1917
Two important events in 1917 changed the course of
the war:
• Tsar Nicholas of Russia was forced to abdicate in
March 1917, and a provisional Russian government
was formed
• The United States declared war on Germany on
April 2, 1917

3. Russia
• In October 1917,
revolutionaries called
Bolsheviks overthrew the
provisional government in
Russia
• “Peace and Bread”
• Signed a peace treaty with
Germany