<span>The Mexican-American War (1846-1848) marked the first U.S. armed conflict chiefly fought on foreign soil. It pitted a politically divided and militarily unprepared Mexico against the expansionist-minded administration of U.S. President James K. Polk, who believed the United States had a “manifest destiny” to spread across the continent to the Pacific Ocean. A border skirmish along the Rio Grande started off the fighting and was followed by a series of U.S. victories. When the dust cleared, Mexico had lost about one-third of its territory, including nearly all of present-day California, Utah, Nevada, Arizona and New Mexico.</span>
Answer:
During the three decades before the Civil War, popular writers created a stereotype, now known as the plantation legend, that described the South as a land of aristocratic planters, beautiful southern belles, poor white trash, faithful household slaves, and superstitious fieldhands.
In 1851, President Millard Fillmore authorized a formal naval expedition to Japan to return shipwrecked Japanese sailors and request that Americans stranded in Japan be returned to the United States.... hopefully this helped!!
Sorry if I am wrong