Final answer:
The demand of the Populists was the regulation of prices for cash crops through government storage of crops and loans to farmers based on current crop prices.
Step-by-step explanation:
The demand of the Populists was the regulation of prices for cash crops. The Populists, who formed in the 1890s, focused on the plights of the farmers and working class. They called for the government to store farmers' crops in government warehouses and provide loans to farmers based on the current crop prices. This would give farmers immediate cash and help increase farm prices.