In 1846 David Wilmot of Pennsylvania submitted a proposal to Congress that would have outlawed slavery in what area?

In 1846, David Wilmot, a Congressman from Pennsylvania, submitted the Wilmot Proviso, which aimed to ban slavery in any territory acquired from Mexico as a result of the Mexican-American War. The proposal sparked intense debate over the expansion of slavery in the United States and highlighted the deepening sectional divides between the North and South. Although the Wilmot Proviso was never passed, it played a significant role in the political discourse leading up to the Civil War.