The conclusion that is best supported by the given selections is that A Chadwick Boseman dedicated much of his career to depicting heroic Black characters.
Chadwick Boseman became known thanks to his constant portrayal of iconic African American men in history and his performances were good enough for him to keep getting those roles.
This means that a significant part of Chadwick Boseman's career was spent playing heroic Black characters who had a profound influence on the United States.
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