What was the general view of both the war and the idea of manifest destiny in the mid 19th century?

In the mid-19th century, the concept of Manifest Destiny—the belief that the United States was destined to expand across the North American continent—was widely embraced, particularly among Americans who saw it as a justification for westward expansion. This belief often fueled support for the Mexican-American War (1846-1848), which many viewed as a means to fulfill this divine mission. However, the war and the notion of Manifest Destiny also faced criticism, particularly from those who opposed the expansion of slavery and the displacement of Native American populations. Overall, while many celebrated the idea as a source of national pride and opportunity, it was also a deeply contentious and polarizing issue.