On bd the answer should be c
The Buffalo Soldiers were the first U.S. troops to see battle in WW1. They were comprised mainly of African American soldiers.
I hope this helps! :)
Possible flooding of low lying areas
<span>Widespread coastal flooding is expected if several degrees of warming is sustained for millennia. Rising sea level is caused by Global warming. Global warming on the other hand is caused by pollution caused by greenhouse gases. One of the most obvious effects of rising sea level is the flooding of low lying areas, along the coastlines.</span>
I think it is A. People began using tools
B- It led to a period of large-scale emigration out of Ireland.
