In what area of china did the japanese exert influence? what other nations did the japanese control in 1911

You have the year wrong. Japan didn't control any other nation in 1911. Japan first started occupying Chinese soil around 1931, and a full-fledged war between the countries started in 1937.

Throughout World War II, Japan primary controlled the Northeast part of China, though they occupied many areas all along the Eastern coast in the middle. They set up a "puppet" state in the Northeast called Manchuko.

Japan also invaded and occupied Korea. By 1942, they occupied Thailand, Vietnam, Burma, Malaysia, The Phillipinnes, and dozens of other territories in the South Pacific.

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