Nelson Wilmarth Aldrich (/ˈɑldɹɪt͡ʃ/; November 6, 1841 – April 16, 1915) was a prominent American politician and a leader of the Republican Party in the United States Senate, where he represented Rhode Island from 1881 to 1911. By the 1890s, he was one of the "Big Four" key Republicans who largely controlled the major decisions of the Senate, along with Orville H. Platt, William B. Allison, and John Coit Spooner. Because of his impact on national politics and central position on the pivotal Senate Finance Committee, he was referred to by the press and public alike as the "general manager of the Nation", dominating tariff and monetary policy in the first decade of the 20th century.
Born at Burgess Farm in Foster, Rhode Island, Aldrich served in the Union Army during the American Civil War. After the war, he worked his way up to become a partner in a large wholesale grocery firm and won election to the Rhode Island House of Representatives. He then served a single term in the United States House of Representatives before winning election to the Senate. In the Senate, he helped to create an extensive system of tariffs that protected American factories and farms from foreign competition, and he was a cosponsor of the Payne–Aldrich Tariff Act. He also helped win Senate approval of the 1898 Treaty of Paris, which ended the Spanish–American War.
