Answer:
Black Americans
Explanation:
Have the ability to have properties, able to read and write, served in the US Union Military.
Solid evidence, to be proven guilty
One very famous, perhaps the most famous way was through improvised vaccination. Specifically, George Washington ordered his healthy men to be injected with substance taken from the wounds of the sick men during a smallpox infection.
A risk was that those men would get sick just like the the sick men did, but the the potential reward would be that they would get sick in a controlled way and that they would be able to fight this disease.
Explanation:
racial segregation was a system derived from the efforts of white Americans to keep African Americans in a subordinate status by denying them equal access to public facilities and ensuring that blacks lived apart from whites
