After the mexican–american war, the young america movement focused mainly on __________.

After the Mexican–American War (1846–1848), the Young America movement emerged in the United States. The movement, which gained prominence in the 1840s and 1850s, was characterized by a focus on expansionism, manifest destiny, and a belief in the spread of American influence and institutions.

The Young America movement emphasized the idea of territorial and commercial expansion as a means of promoting American exceptionalism and economic growth. Supporters of the movement sought to expand American influence in the Western Hemisphere, and they were often advocates of territorial acquisitions and the extension of American power. The movement was associated with a sense of youthful nationalism and a belief in the transformative power of the United States on the world stage.

Therefore, after the Mexican–American War, the Young America movement primarily focused on promoting territorial expansion, economic development, and the projection of American influence beyond its existing borders.