How did the tokugawas unite japan, and what was the effect on the economy?

Three famous daimyo spearheaded the unification in the late sixteenth century. And then, after the great Battle of Sekigahara in 1600, one man took control of all Japan. He was Tokugawa Ieyasu, who became shogun in 1603. ... Both sides of the Tokugawa years were crucial to the later making of modern Japan.

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