The Whig Party
He represented this new party, the Republicans, who were identified as a Northern party, opposed to the extension of slavery.
The Republican Party was formed by politicians who opposed slavery and didn't see any opportunities to do anything about it with the Whigs or Democrats, so they formed their own party, the republican party.
whigs
He eventually opposed all slavery. People would treat African slaves better.
The Free-Soiler party opposed the expansion of slavery into territories gained by the Mexican Cession.
it opposed slavery.
it opposed slavery
the answer is the whig party
The Republicans.
The Republican party.
Republicans
Republicans
Republican
opposed the extension of slavery
Free Soil Party, opposed the expansion of slavery
The republican party was established by those who were opposed to slavery.