Canada economy usa test prep i am stupid i don’t get it

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.

Is it true the ancient egyptians created a calendar that had 10 days in a week

Humans are the only animals capable of communication