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)
Answer:
I'd say it has motion energy because it will fall if let go. It has gravitational potential energy because of its height.
The answer is B
Explanation: i had that question