“The Japanese were conquest-mad ***holes. That’s why.”
BINGO. Pretty simple, isn’t it? Stupid soyboy leftwing historians always point out that we were “embargo meanies” but that wouldn’t stop the japs due to a power hungry emperor..
The militarists in Japan was planning the conquest of Asia well before the 1930s. The only question was whether the coming war was going to be with the USA or the USSR.