PLeAsE HeLp Will mark brainliest Explain the Columbian Exchange effects on the Eastern and Western Hemsiphere

Explanation:

"With Europeans' arrival on the soil of North America, there was an exchange of certain plant and animal cultures. However, that contact also had negative connotations. Europeans also brought certain infectious diseases such as the flu and smallpox to which the natives did not have a developed immune system. These diseases have decimated, in some cases, the entire tribal communities of North America.

When we talk about exchanges of plant and animal species, Europeans took over potatoes, tobacco, tomatoes, corn, and some other crops from the natives. On the other hand, the natives got acquainted with wheat, onions, and pigs, and horses."

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )