Sarcasm? No. Japan could not conquer China, and never would have. They had zero chance of 'conquering the world', that's just silly wartime propaganda.
Europe had divided most of the Pacific into colonies. Japan wanted their own seat at that table.
The West turned the screws on Japan until they got the war they wanted. Then they could put them back in their place.
"You and I know that this continuous putting pins in rattlesnakes finally got this country bitten," - former President Herbert Hoover, after the Japanese attacked the U.S.
What was the reward in this war for the average American? The chance to send their sons to die in Korea, and then Vietnam?
You are a reprobate.