Answer:
- Free soiler
- Staunch Abolitionist
Step-by-step explanation:
Even though David Wilmot was a democrat, he was a Northern Democrat who was opposed to slavery and was a free soiler. Free soilers were people who were opposed to the spread of slavery into the new territories that the U.S. was acquiring at the time.
David Wilmot became a staunch abolitionist who introduced the Wilmot Proviso to the House of Representatives which called for slavery being made illegal in new territories and his views contributed to the formation of the anti-slavery Republican party.