Answer: reduced storage and shipping costs for farmers
Explanation:
Populism emerged from the demand of the small scale farmers for agrarian reform in the Great Plains, Rockies, and the cotton-belt states.
The farmers started their revolt by founding the National Grange of the Patrons of Husbandry in 1867. The Grange used its political power to approve farmer-friendly laws, such as the Granger Laws, which established maximum railroad prices.
George F. Kennan was the American diplomat who stressed the need to contain communism within its borders.
That would be the sixth amendment.