Answer:
Explanation:
Ghana, first of the great medieval trading empires of western Africa (fl. 7th–13th century).
The people are in charge of the government
After the collapse it become a "democratic" nation so US saw it as less of a enemy. Also, it become a lot weaker so it wasn't as big of a rival or threat to the USA. Allowing it to trade and work together on major projects.
Answer:
It helped with communication in secret codes
Explanation: