A. 41 percent
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The main reason why the United States was able to assert itself on the World Stage after WWII was because the US emerged from the war with an incredibly high GDP, thanks mostly to war-time spending. This allowed the US to act as a world leader because so much else of the world had been crippled economically.
Drought and damage to farm land.
A= He argued that observations and experimentation are the most important tools for understanding the natural world
B) an entrepreneur assumes the risk of a new business