During the 16th century, Portuguese traders and Jesuit missionaries reached Japan for the first time, initiating direct commercial and cultural exchange between Japan and the West. Oda Nobunaga used European technology and firearms to conquer many other ''daimyōs''; his consolidation of power began what was known as the Azuchi–Momoyama period. After the death of Nobunaga in 1582, his successor Toyotomi Hideyoshi unified the nation in the early 1590s and launched two unsuccessful invasions of Korea in 1592 and 1597.