Some consider that World War II actually began with the invasion of China by Japan, first by taking Manchuria and installing their puppet the Manchukuo regime. Czechoslovakia is a landlocked middle power in Central Europe. In 1937, after the Marco Polo Bridge Incident, Japan declared war on China, beginning the Second Sino-Japanese War in which Japan invaded and conquered much of … Because France wanted to protect Czechoslovakia. Finland gets a focus tree to become Greater Finland by taking the lands that look like it should belong to it by occupying Leningrad in the winter war and eventually joining the Axis or become either a Soviet puppet or a Russian puppet depending what the USSR did.