A Major Cause of the Great Depression in Europe Was

A major cause of the Great Depression in Europe was

A) Weimar Germany's high tariff policies that prohibited trade with other nations.
B) the recall of American loans from European markets.
C) the underproduction and high prices of agricultural goods in eastern and central Europe.
D) the inability of the League of Nations to set complementary economic policies in different global markets.
E) all of the above.