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Mexico
Mexio declares independence. -
Ireland
Ireland's great potato famine begins. -
United States
U.S. woman suffragists hold Senetic Falls convention. -
Treaty
U.S. Treaty of Guadelupe Hidalgo adds California and other Southwestern states to U.S. -
Italy
Itay becomes unified. -
Germany
FrancoPrussian war ends; Germany is unified.