It gave empires new technologies and attracted more people
The answer is....
The 3rd law
Most black soldiers were scattered throughout the Continental Army in integrated infantry regiments, where they were often assigned to support roles as wagoners, cooks, waiters or artisans. African Americans also served as gunners, sailors on privateers and in the Continental Navy during the Revolution.
African-Americans fought for both sides, providing manpower to both the British and the revolutionaries.
Here are some reasons: They were curious. They were just natural born explorers. They wanted to spread their religion.