When it comes to the us becoming a imperial power, their main goal was economic expansion. now their ideals were good but since they started being an imperial power the economy has gone rather worse. so to answer your question their goals were good not have not been achieved.
The correct answer is Mexico.
Because of Mexico and their gulf of Mexico, the United States cannot control the entire gulf area. If the area changed hands and went to the United States, they could unite the two gulfs and have a huge control over the land and the ports in the new world. However, that's probably never going to happen so it stays this way for now.
Ang isang gerilya (Kastila: guerrilla) ay isang sibilyan na nanglulusob ng isang regular na hukbong panlupa. Kapag inatake ng mga sibilyan ang mga kapwa sibilyan, karaniwan itong tinatawag na terorismo. Kapag dalawa o mas marami pang mga hukbo ng mga sundalong panlupa (na kumakatawan sa mga bansa) ang sumalakay sa isa't isa, isa na itong digmaan. why are we talking bout guerrillas