Why the mid 1700 S's slaves Virginia were?

In the mid-1700s, Virginia's enslaved population grew significantly due to the expansion of tobacco cultivation, which created a high demand for labor. The colony's economy became increasingly dependent on slavery, leading to the establishment of a racial Caste System that justified the subjugation of enslaved Africans. Additionally, the transatlantic slave trade facilitated the influx of enslaved individuals, solidifying their role in Virginia's agricultural economy. This period marked the entrenchment of slavery as a central institution in Southern society.