Trading post between them and the states
answer: the homestead act is the answer
The most recent refugee crisis would be Syria.
<span>To ease trade restrictions over a 10-year-old limit
The North American Free Trade Agreement (NAFTA) was an agreement that began in 1994 between the North American nations of Canada, the United States and Mexico. It replaced an older agreement between the US and Canada and created a 3-way trade bloc intended to promote a mutual beneficial relationship of commerce across the continent.
</span>
If you are talking about the development of political parties, then the issue that led it to them was “the struggle over ratification of the federal Constitution of 1787” (loc.gov).
Federalists, such as Alexander Hamilton, wanted a strong, central government and the Anti-Federalists, like Thomas Jefferson, “advocated states’ rights instead of centralized power”. (Library of Congress)