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.
Contents. Bison, commonly referred to as the American Plains Buffalo, are native not only to the Great Plains and the Midwest. They once roamed the mountain slopes and valleys of Pennsylvania. The state's last native bison was shot in 1801.