How did European exploration affect the Americas?

The European explorers and colonists brought new diseases with them so the Native people of America had no immunity to the diseases causing them to get very sick.

lend lease program was passed by congress on march 11, 1941. the president could ship weapons, food, or stuff to any country whose struggle against the axis assisted u.s. defense

how did the great awakening contribute to the develpment of the united states