Which steps did Carnegie take to try to improve society? Choose all answers that are correct.

He passed laws preventing child labor.

He built libraries across the country.

He gave money to colleges and schools.

He closed down his businesses that polluted.

Which statement about african americans during the civil war is true? o a. they were granted the vote in the north. o b. they were allowed to attend northern universities. c. they were given deeds to southern plantations. o o d. they enlisted in the union army.