Neutrality Act of 1939: A law that modified the neutrality provisions of previous acts, allowing for the sale of weapons on a "cash-and-carry" basis during certain international conflicts.
Lend-Lease Act: An act passed in 1941 that allowed the President to lend or lease military equipment to any country deemed vital to U.S defense.
Isolationism: A policy advocating avoiding involvement in foreign affairs and focusing primarily on domestic concerns.