Even without knowing your answer choices I would say that the U.S economy had fewer jobs and lower wages. So that gave Americans fewer resources .
Answer:
Lewis and Clark's team mapped uncharted land, rivers, and mountains. They brought back journals filled with information about the Native American tribes. They also brought back scientific notes about plants and animals they'd never seen before.
In both wars, the governments of the world had to try to fix the what had been destroyed.
America, on the other hand, had little to no damage in ww1 but had plenty in ww2. They spent most of the time after ww1 partying and making the stock market crash. While after ww2, they tried to get communism out of the new countries.