The answer is D hope it helps :)
Answer:
The North American Free Trade Agreement (NAFTA)
Explanation:
The North American Free Trade Agreement (NAFTA) was a pact eliminating most trade barriers between the U.S., Canada, and Mexico that went into effect on Jan. 1, 1994. Some of its provisions were implemented immediately, while others were staggered over the 15 years that followed.
Guarantee every state a republican form of government, protect from invasions, and respect from territorial integrity.
Land- Land was relatively cheap, and there was a lot to go around. People were hoping to escape slavery, and start a new life with a business of their own, and owning land was a big help.
Gold- Gold People wanted to start a better lives for themselves, and finding a fortune was one of the ways to do so.
(added bonus: Resources! There were many resources available and ready for use, making heading west a definite on a lot of people's to-do lists)
B. usually arbitrated the dispute.
This is due to horrible conditions for factory and migrant workers