The significance of the argument concerning the extension of slavery into territory acquired following the Mexican War was that it represented a struggle between the North and South for control of the federal government.
What was the Mexican War?
The Mexican-American War, which lasted from 1846 to 1848, contributed to America's "manifest destiny" of expanding its territory across the whole North American continent. The Mexican-American War was a watershed moment in the argument over slavery in the United States, igniting a significant schism between the North and South over what land would be free and what area would be slave. The commercial motive in spreading slavery in America drove this military battle. Despite the 1836 Texas Revolution, Mexico regarded Texas to be part of its territory from 1846 to 1848, following the 1845 US annexation of Texas.
To learn more about the Mexican War refer to:
https://brainly.com/question/28226005
#SPJ4
