Which statement about African slavery is true? Slavery and a slave trade existed in Africa before Europeans came. Slavery existed in Africa before Europeans came, but Africans did not trade enslaved people. The trans-Atlantic slave trade introduced slavery to Africa.

What were the immediate effects of prohibition? check all that apply. bootleggers illegally made and sold alcohol. corruption and crime increased. speakeasies were the only legal places to buy alcohol. crime and corruption decreased. alcohol sales were banned in the united states.