feudal japan by henry da best By henry parkin Jan 1, 1192 yoritomo becomes shogun 1192 Minamoto Yoritomo is appointed Shogun, Jan 1, 1542 portuguese traiders 1542 the first Portuguese traders arrive May 25, 1542 european arrival in japan Jan 1, 1638 japan closes door to the west. 1638 Portuguese traders banned from Japan. Mar 2, 2022 heian period The Heian period, stated from 795 to 1192