and the Trans-Neptunian Asteroid Belt. NEPTUNE: The Planet that was Discovered Before it Was Seen. Until near the end of the eighteenth century the realm of Saturn marked the frontier of interplanetary space. Perhaps no one had previously suspected the existence of planets beyond the boundary line of Saturn's orbit.
Slavery was especially common in the colony of south Carolina because. Slavery was especially common in the colony of south Carolina because it grew more corn and wheat than any other southern colony.
In the mid-1700s, the price of South Carolinaâs largest cash crop, rice, was dropping, making indigo a valuable new addition to plantations. The indigo crop also extended the growing season, creating year-round work that made slavery more profitable. Credit: Science & Society Picture Library/SSPL via Getty Images