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World War I
Main events
| Facts | Dates |
|---|---|
| Austro-Hungarian Archduke Franz Ferdinand in Sarajevo assasinated | 28 June 1914 |
| Great powers of Europe were divided into two coalitions | July 1914 |
| Russia mobilizes its army to attack Austria-Hungary | July 30, 1914 |
| Germany invades Belgium | Aug 4, 1914 |
| United States enters World War I | Apr 6, 1917 |
| The Germans sign a peace treaty with Russia | Mar 3, 1918 |
| World War ends | 11 de noviembre de 1918 |