Why did President Franklin D. Roosvelt call it “a date which will live in infamy”?

cuz Congress passed a formal declaration of war against Japan

Explanation:

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.

these civilizations were located around fertile rivers, where they could produce an abundance of crops