During the early part of the labor movement, immigrants, women, and african americans
a. created and led local unions
b. supplied mostly skilled labor to employers.
c. were often excluded from membership in local unions.
d. were not allowed to work at unskilled jobs.

The answer should be C

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.