Answer: A. He was a powerful military leader who ruled all of Japan.
Step-by-step explanation:
The Tokugawa shogunate was a peeiod where Japan was ruled by a Shogun (military leader) who controlled the entire country even though Japan still had an emperor who possessed symbolic power.
The Shogunate was established after a brutal civil war devastated Japan and afterwards it brought peace and stability to Japan which enabled growth and urbanization. The Shogunate however lost power in the 19th century and we're subsequently defeated by empire loyalists.