Economic. the most direct was the stock market crash. politically, the US was helping rebuild the countries in Europe that were destroyed bc of war. however, when the stock market crashed these countries couldn’t pay back the US.
B) a strong central government
DeVelop dROught-reSistaNt cRops wAs soMetHIng tHEy dId NoT dO iN rESpoNse tO tHe enviRONmEntaL liMiTatIons oN fArmIng.