the title "Japanese occupation " is not neutral 

The title "Japanese occupation " gives readers impression that the Japanese rule itself was illegal or what Japan did for the Korean penisula was all wrong. The treaty in 1910 was valid until Japan abandoned the penisula.And Japan improved the quality of the Koreans life.The title gives an implication of disgracing Japan.The title should be changed into "the period under the Japanese sovereignty" or something like that. Needless to say, the description of the article itself is not.