Which best describes the tokugawa shogunate and its policies?
a. a dynasty established by samurai that sought to limit trade with foreign nations in order to boost the economy and create national unity
b. a dynasty created when ieyasu united japan, and that later closed off trade to limit western influence on japanese culture
c. a dynasty created after the shogun defeated kublai khan that greatly limited international trade, so that japanese businesses would prosper
d. a dynasty established by ieyasu after he defeated his rivals that increased trade with foreign nations to enhance

The answer is aa. The Tokugawa shogunate was the last standing Japanese Military government. The samurais and daimyos were also the local rulers under the command of the shogun. The Tokugawa shogun had established Sakoku or the period of National isolation. They did not foreigners to enter Japan and prohibited Japanese men to leave Japan, if they are caught, they will be prosecuted. Japan had limited its trade to a few countries like China, Dutch company and Korea. One of the reasons thatthey had closed off Japan to other countries, is that they want to avoid Spanish and Portugues colonization as well as Christianity to spread in their country.