There are four basic types of legislation: bills; joint resolutions; concurrent resolutions; and simple resolutions.
I think the best way to summarize it is:
1) through a number of purchases:
Louisiana Purchase,
Gadsden Purchase
2)Through Anexation of the Republic of Texas (independent at the time)
3) and through war (The Mexican American-war, which lead to the Mexican Cession)
who was opposed to the idea? it depends
Answer:
the process by which markets move to equilibrium is so predictable that economists sometimes refer to markets as being governed by the law of supply and demand.
Explanation: