Final answer:
Life on reservations was difficult for Plains tribes due to unsuitable land, racism, limited resources, and government negligence.
Step-by-step explanation:
Life on reservations was very difficult for the Plains tribes due to a combination of factors. Life on reservations was difficult for Plains tribes due to unsuitable land, racism, limited resources, and government negligence. First, the land allocated to the tribes was often unsuitable for economic development, lacking natural resources and job opportunities.
Second, the tribes faced racism and alienation from American society, resulting in high poverty rates and limited access to healthcare and education. Lastly, the federal government's negligence in fulfilling treaty obligations, coupled with corruption and theft by government officials, further exacerbated the challenges faced by the tribes.