Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints. Autoimmune diseases are illnesses that occur when the body's tissues are mistakenly attacked by their own immune system.
What role did the bison or buffalo play in the culture of the Plains Indians? The bison were an important source of fur, food, and shelter for the Plains Indians. They used every part of the animals they killed. Bison were also an important part of their culture.
Dozens of native nations lived on the Great Plains including the Sioux Indians, also known as the Lakota or Dakota. The name Sioux means little snakes. These Native Americans were nomadic and occupied territory in Minnesota, Wisconsin, and North and South Dakota, however they were also known to live in parts of Nebraska, Illinois, and Montana.