Before it was established, two-four year terms were common because president Washington popularized it by his choice to do so. This was however never a written law, when the 22nd Amendment was created it was due to the fact President Roosevelt won four terms.
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I'm pretty sure the answer is B, isolationism.
Answer:
Large-scale Mexican-U.S. migration has changed social, economic, and cultural life on both sides of the border. Migration to the United States can offer increased earnings and savings accumulation (Gathmann 2008).
Answer: A system of supportive federalism emerged, as the authorities of the federal government expanded
Federal government is used to describe the government of the United States as a whole.Federalism is the idea that in the US government power is divided between the government of the US and the government of the individual states. The national government is sometimes called federal government because technically US can be considered a federation of states