What was the most impactful thing exchanged (good or bad / intentional or unintentional)

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

What group elected their first democratic member of congress under the new deal coalition? a- northern blue collar workers b- african americans c- native americans d- poor southern whites

How did the french and british differ in the tactics they used to control there empires in asia