The Monroe Doctrine. Washington warned the populous in his farewell address to avoid permanent relationships with foreign governments. This was stated again it what became known as the Monroe Doctrine from President James Monroe, in which he bolstered the position of the United States defense of the western hemisphere and warning foreign governments, especially those in Europe to stay out of North and South America, even through proxies and puppet governments.
It would be B) European Migration
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The United States Constitution can be changed informally. Informal amendments mean that the Constitution does not specifically list these processes as forms of amending the Constitution, but because of change in society or judicial review changed the rule of law de facto.
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