What were the events that led to the Renaissance in Italy?

Crusade and trade lead to contact with Byzantine civilization, renewed with classical Greek and Roman literature, knowledge of African achievements in science and medicine.

Explanation:

Crusade and trade lead to contact with Byzantine civilization, renewed with classical Greek and Roman literature, knowledge of African achievements in science and medicine.

Explanation:

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answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.