As a young adult, Boone supplemented his farm income by hunting and trapping game, and selling their pelts in the fur market. Through this work, Boone first learned the easy routes westward. Despite some resistance from Native American tribes such as the Shawnee, in 1775, Boone blazed his Wilderness Road from North Carolina and Tennessee through the Cumberland Gap in the Cumberland Mountains into Kentucky. There, he founded the village of Boonesborough, Kentucky, one of the first American settlements west of the Appalachians. By the end of the 18th century, more than 200,000 Americans migrated to Kentucky/Virginia by following the route marked by Boone.