Answer:
Sooner: A person who attempted to enter and claim the Unassigned Lands before the Dawes Act
homesteader: A person who claimed a portion of land and then lived on it for five years to gain ownership​
Boomer: A person who settled on land illegally just before a land run
Step-by-step explanation:
These terms are derived from the 19th century US history and are related with the,
- The Homestead Acts
- Indian Appropriations Act of 1889
- Land Rush of 1889
This was the time when many of the unassigned lands in the west were settled by the Europeans. Specially after the purchase of Louisiana.