The Southern Colonies consisted of Virginia, Maryland, North Carolina, South Carolina, and Georgia. They shared characteristics of large-scale plantation agriculture relying heavily on African slave labor. Cash crops varied by region, from tobacco in Virginia to rice and indigo in the coastal lowlands further south. Slavery became more permanent and race-based over time as it proved more profitable than the indentured servants originally used. The Triangular Trade system transported goods and slaves among Europe, Africa, and the Americas to support the plantation economies of the Southern Colonies.