1. The Western Frontier:
- Comprised of vast unexplored territories, including the Rocky Mountains, the Great Plains, and the Pacific Northwest.
2. Texas and the Southwest:
- Texas was part of Mexico, while the Southwest was largely uncharted and inhabited by Native American tribes.
3. Alaska:
- Known as Russian America, it was far removed from the settlements in the eastern United States.
4. Florida and the Gulf Coast:
- Much of Florida was still wild and undeveloped, and the Gulf Coast was considered a frontier region.