In 1873, the company changed its name to Mitsubishi, a compound of mitsu ("three") and hishi (literally, "water chestnut", often used in Japanese to denote a rhombus or diamond). Mitsubishi's emblem was a combination of the Iwasaki family crest, showing three overlapping lozenges, and the crest with three oak leaves, arranged in a threefold rotational symmetry, of the Yamauchi family, which controlled the part of Shikoku where Yatarō was born. From 1874 to 1875, Iwasaki was contracted by the Japanese government to transport Japanese soldiers and war materials. The Japanese government purchased a number of ships for the Japanese Expedition of 1874 to Taiwan against the Paiwan Aborigines in southeast Taiwan, and these ships were later given to Mitsubishi after the expedition was finished in 1875. This created strong links between Mitsubishi and the Japanese government that ensured the new company's success. In return, Mitsubishi supported the new Japanese government and transported troops who defeated the Satsuma Rebellion in 1877. Thus, the success of Mitsubishi became intertwined with the rise of the modern Japanese state and economy and one of the "Big Four" zaibatsu companies. In 1885, a merger of Mitsubishi shipping activities with competitor Kyodo Unyu Kaisha (founded 1882) led to the adoption of the company's name Nippon Yusen Kabushiki Kaisha, or 'NYK' in short, which still exists and is one of the largest global shipping groups. Subsequently, Iwasaki invested in mining, ship repair, and finance industries in addition to shipping. In 1884, Iwasaki took a lease on the Nagasaki Shipyard, which allowed the company to undertake shipbuilding on a large scale and renamed it the Nagasaki Shipyard & Machinery Works, which are now part of its Mitsubishi Heavy Industries industrial branch. Iwasaki often held dinners for dignitaries, spending a huge amount of money on these occasions, but he also made many friends who later helped him by doing favors. Death Iwasaki died of stomach cancer on 7 February 1885, aged 50, and was succeeded as the head of the family business first by his brother, Iwasaki Yanosuke, and later his son, Hisaya. In 1903, Iwasaki's fourth daughter, Masako, married Baron Shidehara Kijūrō, the first Prime Minister of Japan after World War II. Popular culture Iwasaki serves as the secondary protagonist of the 49th NHK Taiga drama, Ryōma den, focusing on his activities during the Bakumatsu, and also serves as the framing narrator of the story. He is portrayed