China Imperialism By Andrew2022 Jan 1, 1839 Imperialism in China began with the First Opium War Jan 1, 1842 Treaty of nanking Jan 1, 1858 China was forced to open 11 more treaty ports Jan 1, 1866 Manchu emperor overthrown Jan 1, 1870 Western nations carved China into spheres of influence Jan 1, 1899 Uprising Jan 1, 1911 Revolution broke out across the county