American West

2. An event in which previously restricted land of the United States was opened to homestead on a first-arrival basis
5. The act that regulated land rights on tribal territories within the United States
8. A United States federal agency within the Department of the Interior
11. An American express mail service that used relays of horse-mounted riders
13. The given name of many cemeteries, chiefly in the Western United States
14. Several laws in the United States by which an applicant could acquire ownership of government land or the public domain, typically called a homestead
15. A group of wagons traveling together
16. The trail that was used in the post-Civil War era to drive cattle overland from ranches in Texas to Kansas railheads

1. The cultural belief in the 19th-century United States that American settlers were destined to expand across North America
3. A ceremony incorporated into numerous Native American belief systems proper practice of the dance would reunite the living with spirits of the dead, bring the spirits to fight on their behalf, end American Westward expansion, and bring peace, prosperity, and unity to Native American peoples throughout the region
4. An area of land held and governed by a U.S. federal government-recognized Native American tribal nation, whose government is semi-sovereign
6. An agreement between the United States and the Oglala, Miniconjou, and Brulé bands of Lakota people, Yanktonai Dakota, and Arapaho Nation, following the failure of the first Fort Laramie treaty
7. The process of moving a herd of cattle from one place to another usually moved and herded by cowboys on horses
9. A private security guard and detective agency established around 1850 in the United States
10. An ethnic cleansing and forced displacement of approximately 60,000 people of the "Five Civilized Tribes" between 1830 and 1850 by the United States government
12. Regiments formed during the 19th century to serve on the American frontier that primarily comprised African Americans