The period of Tokugawa rule from 1603 to 1868 was one of relative peace. Which of the following was a method used by the Tokugawa to control its enemies?
A. Land was distributed to daimyo based on their loyalty.
B. Through the policy of Sankin Kotai, daimyo were required to live in Edo every other year.
C. Guns were banished.
D. all of the above