Hello there.
<span>Which of the following was most important in prompting the Americans to support the Immigration Act of 1924?
</span><span>b. A nativist belief that northern Europeans were culturally superior to the waves of eastern and southern Europeans who had arrived in America over the last forty years
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Id say your best bet is A because Washington established the cabinet which aids presidents in running the country. It cannot be B, C or D because congressional oversight was already established by the constitution, there were only a couple departments, and the constitution already defined its purpose.
A rich layer of fertile ground was left where people could grow agricultural products. This enabled them to settle down in the river valley and start building a civilization. The flooding of the Nile became a major thing in Egyptian culture because their lives depended on successful harvests and floods.