What two groups competed for control in Japan?

Daimyo

Explanation:

Daimyo, any of the largest and most powerful landholding magnates in Japan from about the 10th century until the latter half of the 19th century. The Japanese word daimyo is compounded from dai (“large”) and myō (for myōden, or “name-land,” meaning “private land”).

a. theta waves. this is because the person is in a light sleep which means the brain waves would show these kind of waves.