Answer:
columbian exchange
Explanation:
The Columbian exchange, also known as the Columbian interchange, named for Christopher Columbus, was the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas between the Americas, West Africa, and the Old World in the 15th and 16th centuries.
as Russian was complicated state it was obligated to start changing in order to advance
-3x+6
Then divide both sides by -3
x=-2
Answer:songhai is similar to Ethiopia because the fact that they were both powerful in their own way. They both really expanded the empire, had incredible rulers, and were very skilled at controlling their armies. hope this helps