The Germans made continental war because they had not fleet. They had not fleet because the treaty of Vesailles did't allow it. Tanks and Airplaine could be built in secrecy in Hangars, which is much more difficult with ships. The negotiations after world war One were still held form a colonial perspective, which led to all the following problems. Borders and Lands were traded by the winning Nations like pieces of cake on a market. Italy and Japan, in World War One on the side of the Alliance were cheated, which led to the following conflicts. The War between Japan and the USA was the first war about Oil. All in all, cheesy acting, but good history telling.
