Henry George (September 2, 1839 – October 29, 1897) was an American political economist and journalist. He promoted the "single tax" on land, though he avoided that term. His writing was immensely popular in the 19th century America, and sparked several reform movements of the Progressive Era. He inspired the economic philosophy known as Georgism, based on the belief that people should own the value they produce themselves, but that the economic value derived from land (including natural resources) should belong equally to all members of society. He argued that a single tax on land would itself reform society and economy.