World War ll By skips Period: Apr 21, 1930 to Apr 21, 1950 World War ll Sep 18, 1931 Japan attacks Manchuria It was to be the first step on the path to World War II Dec 16, 1935 Italy conquers Ethiopia the invading forces steadily pushed back the ill-armed and poorly trained Ethiopian army, winning a major victory near Lake Ascianghi and taking the capital, Addis Ababa