Nevertheless, Hideyoshi's increasing influence allowed him to seize a significant degree of power from the Oda clan following Oda Nobunaga's death in 1582. As the virtual ruler of most of Japan, Hideyoshi received the new clan name "Toyotomi" in 1585 from the emperor, and achieved the unification of Japan in 1590.
Despite this, Hideyoshi's influence grew to a point where he could seize significant power from the Oda clan after Nobunaga's death in 1582. He became the de facto ruler of most of Japan and was given the new clan name "Toyotomi" by the emperor in 1585.  He then unified Japan in 1590.