10. Who spread Islam to trade centers along the Eastern coasts of Africa? 11. Who created the compass to help significantly with sailing? 12. What trade route took place about the same time as Alexander the Great era began? 13. The first hospitals and psychiatric centers could be traced to 14. Who discovered the formulas for sine and cosine? 15. Who provided over half the gold of the Afro-Eurasian gold trade? 16. This invention led to the discovery of other explosive devices 17.During the Middle Ages, who created a vast system of trade networks?
10. Who spread Islam to trade centers along the Eastern coasts of Africa? 11. Who created the compass to help significantly with sailing? 12. What trade route took place about the same time as Alexander the Great era began? 13. The first hospitals and psychiatric centers could be traced to 14. Who discovered the formulas for sine and cosine? 15. Who provided over half the gold of the Afro-Eurasian gold trade? 16. This invention led to the discovery of other explosive devices 17.During the Middle Ages, who created a vast system of trade networks?
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I need help from questions 10-13 please
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