Imperialism By dana.stripling Jan 1, 1800 Imperialism started in Europe Sep 16, 1810 Mexico's Independence Period: Jan 1, 1844 to Jan 1, 1845 Berlin Conference Period: Jan 1, 1870 to Jan 1, 1914 imperialist nations gained control over much of the world Jan 1, 1875 Sepoy Rebellion Period: Jan 1, 1884 to Jan 1, 1885 Berlin Conference Jan 1, 1898 Spanish American War Jan 1, 1911 francisco Madero was President of Mexico Jan 1, 1913 Victoriano Huerto tried to reestablish dictatorship