Answer: contain the spread of communism.
Explanation:
The Truman Doctrine was to established that the United States would provide political, military and economic assistance to all democratic nations under threat from external or internal authoritarian forces. The goal for the Marshall Plan was to aid in the economic recovery of nations after World War II and to reduce the influence of Communist parties within them.
A.Fauncet because the way a society organizes the production of goods
Roads canals and railroads helped move people west because then supplies could get to people living in the west