Spain, Portugal, Ireland, Iceland. Those are the only ones I can think of
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)
Hi It would help if you had posted the clip of the video so we could help respond to the question
d isn your answer bc i just whatched this on tv
1. False 2. True 3. True 4.false 5. True (I could be wrong but I think I am right)