What was the Bakufu system and who were the three main groups that were a part of this system?

Yorimoto established Japan's first military government, or bakufu, called the Kamakura shogunate. Finally, shoguns worked with samurai, a warrior class who were usually employed by the daimyo. A series of three major shogunates (Kamakura, Ashikaga, Tokugawa) led Japan for most of its history from 1192 until 1868.

Explanation:

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the main reason that the constitution did not proclaim all men to be free and equal is because of the issue of slavery.