The answer is Emperor Constantine.
He was a Roman King of Greek background who changed history by becoming the first Roman Emperor to convert to Christianity.
He also moved the capital of his Empire to Byzantium, modern-day Istanbul. The city bore his name for much of the next thousand or so years, being known as Constantinople.
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Plate tectonics is what you are referring to?
Answer:
freedom, right to bear arms,jury trial
The action is that he want black people to have a right for what they want to do and also that they should follow their own dreams