Final answer:
A reservation is a tract of land given to Native American tribes by treatise. These lands, known as reservation lands, were intended to be permanent areas for tribes, often restricted economically and legally, with a complex history of treaty agreements and policy changes such as termination.
Step-by-step explanation:
A reservation is a tract of land given to the Native American tribal nations by treaty. Native American tribes were traditionally given reservation lands as supposedly permanent homes where they could live and practice their culture. However, policies such as the termination policy adopted in 1953 led to a period where the United States voided the treaty agreements with Native peoples, resulting in loss of recognition and rights. During this time, 109 tribes experienced termination, with most regaining federal recognition later. Reservations were often limited in economic development by laws such as the Trade and Intercourse Acts, which restricted trade across reservation borders. Nonetheless, treaties made with Native tribes, which often resulted in these restricted reservations, varied significantly in terms of rights and services promised.