To prevent another Bacon's Rebellion, the elite in colonial Virginia attempted to control the landless whites who had instigated the revolt. One of the grievances of this class was that they were not allowed to spread west and take over Native Americans' land. In the aftermath of the rebellion, the policy against taking over Natives Americans' land was relaxed, and the Native Americans began to lose their lands to restive white settlers.
In addition, the planters decided to get rid of white indentured servants over time and to institute a harsher racial slave code. In other words, they decided to institute a color line to make whites free (though, in many cases, still poor) and to make blacks slaves. The color line served to convince poor whites they had been co-opted into the power structure of the colony; although, in actuality, they were really not part of this structure. In addition, the new harsh slave laws were intended to prevent future revolts.