When did yoritomo rise?

Minamoto no Yoritomo rose to power in the late 12th century, following his victory in the Genpei War (1180-1185) against the Taira clan. In 1185, he established the Kamakura shogunate, the first shogunate in Japan, effectively becoming the first shōgun in 1192. His rise marked the beginning of a new era in Japanese history, characterized by military rule and the dominance of the samurai class.