Singing a melody without alternating voices or groups is called

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.

What are some examples of native americans were impacted by colonization in america

Roman builders used rows of arches in there buildings to form a curved ceiling called what