Answer:
After this vote, the antebellum political landscape was forever changed. The failure of the Wilmot Proviso only put off the issue of slavery for so long.
Step-by-step explanation:
The Mexican-American war (1846-1848) changed the slavery debate. It almost doubled the size of the United States and began a debate, between Northerners and Southerners, over what to do with the newly acquired land.