<span>Mansa Musa fortune by exploiting his country’s salt and gold production.</span>
<span>He built a Navy that would defeat the Persian fleet, after which Athens was the Mediterranean superpower of the day.</span>
Answer:
They wiped them out.
Explanation:
The English as greedy savages wanted more land with more riches for the glory of their country. Little did they know the land was takes from the "indians". Did they care? Nope. So they killed them, in wars and defeated them because they were more advanced in war-like technology.
Hope it helps :D
Actually every single one is correct, A<B<C they all are factors in the decline of Sumer.