The Populist Party called for "free silver" to help raise prices for farm goods. , called for "free silver" to help raise prices for farm goods. , , excluded African Americans from membership. excluded African Americans from membership. supported private ownership of railroads. supported private ownership of railroads. divided northern and southern urban workers.

called for "free silver" to help raise prices for farm goods.

Explanation:

The populists were an Agrarian-based political movement that came up to ensure the agrarian workers and farmers in the country had better conditions.  

Stephen Grover Cleveland was an American politician and lawyer who was the 22nd and 24th president of the United States,  

Stephen Grover Cleveland, the 22nd and 24th president of the United States favored the use of gold to back the nation’s money supply but the Populist Party supporters and the agrarian wing of the Democratic Party wanted the country to use silver which was in more abundance by that time.

the name of the theory is landmass theory.