Setting the Stage An Expanding Nation Farther west lay regions claimed by Great Britain, Russia, France, and Spain. By the 1850s, the United States had acquired these lands, more than doubling its size, and extended its western border to the Pacific Ocean 1.36 Mb. 1
Section 5 Mexican-American War You might think that Texas and Oregon were quite enough new territory for any president. But not for Polk. This humorless, hardworking president had one great goal. He wanted to expand the United States as far as he could 0.81 Mb. 5
Ancient people of the southwest Audio: The Ancient Aztecs who traveled north to trade refer to it as Aztlan. Early Spanish explorers call it Pimeria Alta. Mexicans in the early nineteenth century named it El Norte and it was only after the Mexican-American War of 1848 that this region became known 139.02 Kb. 1