World war ii was followed in the united states by what has been called "a golden age" of capitalism; between 1946 and 1960, the nation's gross national product more than doubled.

the american revolution led to the creation of a democratic republic,is the correct answer;

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.