Answer:
Because of the boom bust cycle.
Answer:
Artificial intelligence such as Robots
Explanation:
In 18th century, slavery was at peak value since there was high need of labour.
In 20th century, scientists have created robots which has replaced slaves hence slavery decayed.
Answer:
Mansa
Explanation:
West African kingdoms were led by a type of emperor called a MANSA. This is evident in the history of Mali, one of the greatest empires in West Africa.
The Mali Empire was ruled for years by Emperors called Mansas. The empire lasted between 1235 to 1670. The most famous of its Emperor is Mansa Musa Keita. The tenth Mansa of Mali Empire.
His domain covered modern-day Ghana, Mali, Mauritania, Gambia, Guinea, and Senegal