What were 2 impacts from the colombian exchange

The primary positive effect of the Columbian exchange was the introduction of New World crops, such as potatoes and corn, to the Old World. The most significant negative effects were the transmission of African populations into slavery and the exchange of diseases between the Old and New World.

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The lives of free African americans are similar to those of enslaved african americans is they both were treated badly and the free african americans were still treated as if they were still slaves.