The study of disease in human population is

Which of the following was a key accomplishment of the people of songhai? a. they had a strong military and became the largest empire in west africa. b. they established a center of islamic scholarship. c. they worked with iron and prospered from the gold-salt trade. d. they dominated in the trade of ivory, enslaved people, and animal skins.

Which are components pf a political party? why do we need political parties give reason.

Andrew jackson image as what's candídate gained him the presidency in 1828?