The correct option is: " Mexican troops invaded part of California and claimed the land"
Polk is considered the last strong president of the pre-civil war era. He was able to undertake during his mandate all the national and international objectives that had been proposed. When Mexico rejected the annexation of Texas to the United States, he led an extremely successful war against him in which he snatched everything that is now known as the Southwest of the United States, practically half of the Mexican territory until then.
