"Passing" (for white) was a survival strategy employed by some lighter-skinned African Americans in?

Passing for white was a strategy employed by the lighter-skinned African Americans as slaves attempting to escape to the North, both individually and through the Underground railroad , both before and during the Civil war when escaping via public transportation such as trains, etc. or walking. Sometimes, this strategy was used to the extreme, where a lighter-skinned African American slave could bring his darker-skinned friends or family with him as he escaped, claiming that they were his own slaves if questioned.
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-Mischief Goddess