Question: Chang Ucchin was born in korea during a time that ended with the conclusion of what? 

Related documents: [0]  [DOC] Korea under Japanese rule began with the end of the short-lived Korean Empire in 1910 and ended at the conclusion of World War II in 1945. Japanese rule of Korea was the outcome of a process that began with the Japan–Korea Treaty of 1876, whereby a complex coalition of the Meiji government, military, and business officials sought to integrate Korea both politically and economically into the Empire of Japan. A major stepping-stone towards the Japanese occupation of Korea was the Japan–Korea Treaty of 1905, in which the then-Korean Empire was declared a protectorate of Japan. The annexation of Korea by Japan was set up in the Japan–Korea Treaty of 1910, which was never actually signed by the Korean Regent, Gojong. [END] 
[1]  [DOC] Chang Ucchin (26 November 1917 – 27 December 1990) is one of the representatives of modern Korean fine art. Chang was born when Korea was still under Japanese colonial rule. He studied western art at Tokyo's Imperial School of Art. He became a professor of fine arts at Seoul National University in 1954, but resigned to paint full-time from 1960. [END]  
Answer: World War II
World War II