The purpose of the slave codes was to

Slave codes varied slightly from colony to colony, but most made bondage a lifelong condition and ensured that all descendants of slaves would be slaves as well. Other codes prohibited them from:

votingowning propertytestifying in court against whitesgathering in large numberstraveling without permissionmarrying whites.

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.