During this decade, the philosopher Ikki Kita was executed and the Kodoha party was dissolved. (10[1])Near the beginning of this decade, the Sakurakai plotted to install Kazushige Ugaki as Prime Minister in the March Incident. Dan Takuma was assassinated (10[1])during this decade as part of the League (10[1])of Blood Movement. (10[1])In this decade, eleven naval officers participated in the shooting of Inukai Tsuyoshi in the May 15 Incident in an attempt to increase the powers of the Showa emperor. A group (10[1])of (-5[1])"young (-5[1])officers" were executed after (10[1])this decade's February 26 Incident for trying to assassinate prime minister Keisuke Okada. In this decade, the Mukden Incident initiated the Japanese (-5[1])invasion of Manchuria. For 10 points, name this decade which included the beginning of World War II. ■END■ (10[2])