The group that was most likely affected by the above were C. Native Americans
The poster talks about how land was available in Iowa and Nebraska. This was only possible because:
- the federal government took the lands of the Natives who lived there through various treaties
- settlers moved into those lands without regard for Native ownership
The people who most suffered would therefore be the Native Americans because they had to watch as their lands were lost to settlers and they were pushed into reservations.
In conclusion, the westward expansion of American settlers hurt Native Americans most as it resulted in them losing their land.
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