Answer:
Segregation of society, meaning black and white schools, hospitals ,etc.
A form of collective social behavior that persists over a long period and gradually finds place as a tradition is called a custom. Examples:
Drinking a glass of wine with each meal--French custom (although that might changing due to economic woe and other variables)
Saying a prayer before each meal--Latin American custom (although it's a custom in other places too, and not every Latin American does this)
<span>The is: A.The bravery of the Tuskegee Airmen during World War II combat was instrumental in securing racial integration of the US military.
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What are you confused about on the question?
I believe the answer is A