Answer: Ito Hirobumi
Explanation: Ito Hirobumi became the first Prime Minister of Japan in 1885. He was born on October 16, 1841 and died on October 26, 1909. The cause of his death was Assassination. Itō Hirobumi (伊藤 博文, 16 October 1841 – 26 October 1909, born as Hayashi Risuke and also known as Hirofumi, Hakubun and briefly during his youth as Itō Shunsuke) was a Japanese politician and the first Prime Minister of Japan. He was also a leading member of the genrō, a group of senior statesmen that dictated Japan's policies during the Meiji Era. After Japanese forces emerged victorious over Russia, the ensuing Japan–Korea Treaty of 1905 made Itō the first Japanese Resident-General of Korea. On 22 December 1885, Itō became the first prime minister of Japan. On 30 April 1888, Itō resigned as prime minister, but headed the new Privy Council to maintain power behind-the-scenes. In 1889, he also became the first genrō. The Meiji Constitution was promulgated in February 1889. He had added to it the references to the kokutai or "national polity" as the justification of the emperor's authority through his divine descent and the unbroken line of emperors, and the unique relationship between subject and sovereign.[7] This stemmed from his rejection of some European notions as unfit for Japan, as they stemmed from European constitutional practice and Christianity.[7] Despite initially supporting the sovereignty of the indigenous Joseon monarchy, he ultimately consented to the total annexation of Korea in response to pressure from the increasingly powerful Imperial Army. Shortly thereafter, he resigned as Resident-General in 1909 and assumed office once again as President of the Imperial Privy Council. Four months later, Itō was assassinated by Korean-independence activist and nationalist An Jung-geun in Manchuria.[4][5] The annexation process was formalized by another treaty the following year after Ito's death. Through his daughter Ikuko, Itō was the father-in-law of politician, intellectual and author Suematsu Kenchō.
