American farmer have supported the Populist Movement because the populists were in favor of "free silver," which would improve the economic outlook for small farmers.
Step-by-step explanation:
Populist movement is a kind of movement started in 19th century to benefit the farmers. This movement was started for the social cause but turned political with the farmer’s cooperation.
The populist movement helped the farmers in many ways. They decided to increase the economic outlook for small farmers. They thought that introduction of silver coins by the government will help the farmers in improving their economy. Increasing the money circulation will cause people to pay more for crops and reduce the interest rates.