What was the Marshall Plan? a strategy for using an amphibious assault followed by an airborne assault to breach German coastal defenses in Northern France

a program of economic aid provided by the U. S. to help the countries of Western Europe rebuild after World War II

a pact among the U. S. and eleven other Western democracies to defend one another in case of attack by the Soviet Union and its communist allies

a proposal by Western allies in West Berlin to construct concrete barriers to prevent unwanted immigration from East Berliners fleeing communism