The correct answers are A) they provided food and medical aid and B) they settled water disputes.
The two ways in that the Bureau of Indian Affairs help Native American communities living in Indian Territory are: they provided food and medical aid and they settled water disputes.
The Bureau of Indian Affairs (BIA) is an agency of the federal government that wants to help Native American Indians to improve their lives, support them in economic decisions, and protect their culture and traditions. It was formed on March 11, 1824. The most important role that the agency has played in these years is to negotiate agreements and treaties with the federal government that benefited Indian tribes, and helped them to resolve some controversies.