The extension of slavery into new territories
They were divided but most favored the abolition of slavery.
That the House was divided but with a majority favoring the abolition of slavery.
wilmot proviso
It failed to become law.
David Wilmot
Vote their conscience and not their constituency.
Southerners managed to defeat the Wilmot Proviso by using their political power to block its passage in Congress. They successfully argued that the Proviso was unconstitutional and threatened to secede from the Union if it was enacted, leading to a compromise to preserve the Union.
What was the unstated goal of the Wilmot Proviso?
Southerners opposed the Wilmot Proviso. This is because the Wilmot Proviso established peace with Mexico, and the land that Mexico owned was in the South.
Wilmot's Proviso brought the future of slavery to everyone.
The Wilmot Proviso qualifies as such. It however, was one of the leading causes of the American Civil War (1861-1865)
In part, simply by bringing the issue of slavery to the halls of Congress.