Answer:
The most common positive affect was the intoduction to new crops the most common negative affect was the exchanges of diseases from old to new world
Explanation:
Because they was a possibility that their family member would not return.
The highly organized farmers of the Ohio River Valley were called Mound Builders. They <span>were inhabitants of </span>North America<span> who, during a 5,000-year period, constructed various styles of earthen </span>mounds<span> for religious and ceremonial, burial, and elite residential purposes. </span>
One of the reasons why the Indian Removal Act was more expensive than the government had planned was that "<span>The Seminole people resisted and cost the government money in war costs", although there was moving costs related to this issue as well.</span>
That is an example of oppression.
