Question

Which of the following represents the main cause of the Mexican-American War?

(A) disagreements with Britain about the Oregon territory

(B) increasing trade with Japan and other countries in the Pacific

(C) the Gadsden Purchase and the withdrawal of Spain from Mexico

(D) the United States' push to gain territories all the way to the Pacific

Answer 1

The United States' pushed to gain territories all the way to the Pacific represents the main cause of the Mexican-American War.
http://militaryhistory.about.com/od/mexicanamericanwar/p/Mexican101.htm

Answer 2

Oh my gosh thank you very much! :D

Answer 3

No problemo! :)