Describe the effect that President Roosevelt’s repudiation of the London economic conference caused

Explanation:

Since the London economic conference was thought up in order to stabilize the depression ravaging many countries Roosvelt's change of mind about it didn't end well. He decided to keep U.S goods prices inflated and the whole conference fell apart without the U.S. participating in it. This led to a big rise of extreme nationalism in many countries

i believe the answer is c