Fill in the blank: By 1845, as became increasingly inhabited by Americans, President Polk became committed to obtaining them from Mexico. A. New Mexico and Canada B. California and Canada C. Oregon and Canada D. California and New Mexico

California and New Mexico

Explanation:

Mexican american war was the event which helped  US win California and new mexico under the president ship of James K Polk. It was the expansionist strategy of Polk. The war officially started on the emergence of border dispute of south Texas