| 1913–1925 | Suffrage for women expands in much of Europe |
| 1914 | August: World War I begins |
| 1916 | Irish nationalists stage Easter Uprising against British rule |
| 1917 | March: Revolution in Russia overturns tsarist autocracy |
| April: United States enters World War I |
| November: Bolshevik Revolution in Russia |
| 1918 | November: Armistice ends fighting of World War I; revolutionary turmoil throughout Germany; kaiser abdicates |
| 1918–1922 | Civil war in Russia |
| 1919 | Weimar Republic is established |
| 1919–1920 | Paris Peace Conference redraws map of Europe |
| 1922 | Ireland gains independence; Fascists march on Rome; Mussolini becomes prime minister; Joyce, Ulysses; Hitler builds Nazi Party |
| 1924 | Lenin dies; Stalin and Trotsky contend for power |
| 1924–1929 | Period of general economic prosperity and stability |
| 1929 | October: Stock market crash in United States |