In 1930, the u. s. passed the smoot-hawley tariff, one of the most protectionist tariffs in history. many nations retaliated with their own tariffs. as a result,
a) international trade increased during the early 1930s.
b) international trade decreased during the early 1930s.
c) domestic production of agricultural products increased during the 1930s.
d) u. s. support for world free trade agreements such as gatt decreased during the 1930s.