Jan 26, 2024 · 1905 World's largest diamond, the 3,106-carat Cullinan, is found in South Africa. The Cullinan Diamond, discovered in South Africa on January 26, 1905. 1907 1st US federal corrupt election practices law passed. 1907 In Austria, universal and direct suffrage (limited to males over 24) is introduced, a reform long demanded by the socialists and ...