He thought that having their support would benefit the economy and their credibility.
Answer:
Their explosive invention would become the basis for almost every weapon used in war from that point on, from fiery arrows to rifles, cannons and grenades. Gunpowder made warfare all over the world very different, affecting the way battles were fought and borders were drawn throughout the Middle Ages.
Secondary sources is the right one
Im pretty sure its true but not 100% correct .
After the attack on Pearl Harbor the USA was sneak attacked by the Japanese so Roosevelt had no other alternative than to place all Japanese -Americans in prison camps for America’s safety in case japan had spies in our country
