Respuesta :
Answer:
Mass migration of African American workers to industrial centers
Explanation:
The trends that had started in the late 19th century is Mass migration of African American workers to industrial centers. The correct option is B.
What is migration?
Leaving of one place and moving or settling to another city or state or country for survival is called migration.
The United States' entrance into World War I accelerated.
The trend started in late 19th century is the migration of large number of African American workers. They moved to industrial areas to live as they had to work in industries.
Thus, the correct option is B.
Learn more about migration.
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