The pioneer concept and ethos greatly predate the migration to the Western United States, with which they are commonly associated, and many places now considered "East" were settled by pioneers from even further east. For example, Daniel Boone, a key figure in U.S. history, settled in Kentucky, when that "Dark and Bloody Ground" was still undeveloped.
One important development in the Western settlement were the Homestead Acts, which provided formal legislation for settlers which regulated the settlement process with little to no concern for the Native inhabitants of the land.[6] Pioneers also settled on land that was once inhabited by American Indian tribes.[7]