Briefly explain ONE specific historical event or development during the period 1840-1850 that could be used to support Meed's interpretation that the majority of U. S. citizens supported the Mexican American War.

I don’t know if this will help you But here is what I got about the Mexican American War.

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.

1is that it separated familys