Japan invaded Manchuria in 1931 because

Manchuria had refused to make peace with Japan.

Japan wanted to take back lands that belonged to it.

Japan wanted raw materials and natural resources.

Manchuria had invaded Japan during World War I.

In 1931, Japan invaded Manchurian, because it wanted to exploit its natural resources, for own economic development. So, the correct answer is C. Japan did not want to depend on other countries, for these resources and therefore, invade Manchurian