Question

why the conflict took place in feudal japan

Answer 1

The military history of Japan is characterized by a period of clan warfare that lasted until the 12th century AD. This was followed by feudal wars that culminated in military governments known as the "Shogunate". Feudal militarism transitioned to imperial militarism in the 19th century after the landings of Admiral Perry and the elevation of the Meiji Emperor. This led to rampant imperialism until Japan's defeat by the Allies in World War II. The Occupation of Japan marks the inception of modern Japanese military history, with the drafting of a new Constitution prohibiting the ability to wage war against other nations.