After the death of Hideyoshi, he won the Battle of Sekigahara, was appointed to Seii taishogun by the emperor, and opened a bakufu in Edo (called the Edo bakufu or the Tokugawa bakufu).
秀吉の死後、関ヶ原の戦いに勝利し、天皇から征夷大将軍に任ぜられ、江戸に幕府（江戸幕府・徳川幕府と呼ぶ）を開いた。