Much like many other countries, the US foreign policy was based in isolationism which resulted in new restrictions on immigration and a lack of membership in international organizations. There isn't a good explanation as to why it was isolationist in the first place besides the fact most countries were at that time so it made it easier for the US to do the same.
Fue proclamada el 4 de julio de 1776, principalmente por Thomas Jefferson. Las Trece Colonias se querían independizar de Inglaterra porque, querían libertad para comercializar sus productos y liberarse de los impuestos de los artículos de consumo diario que debían pagar a Inglaterra.
