Free Silver Movement, in late 19th-century American history, advocacy of unlimited coinage of silver. The movement was precipitated by an act of Congress in 1873 that omitted the silver dollar from the list of authorized coins (the “Crime of ’73”). Supporters of free silver included owners of silver mines in the West, farmers who believed that an expanded currency would increase the price of their crops, and debtors who hoped it would enable them to pay their debts more easily. For true believers, silver became the symbol of economic justice for the mass of the American people.