Slaves were shipped mainly from Africa to the U.S through the Atlantic Ocean, then sold to mansions where they worked for the rest of their lives.
Many original settlers in the Carolinas came from Barbados. It was in 1670 that Albemarle Point was established in South Carolina. Most of the settlers came from the Carribean island of Barbados.
The 16th amendment in 1913 permits Congress to lay and collect taxes on incomes, from whatever source derived, without apportioning it among the states or basing it on the US Census. Ratification was completed on February 3, 1913. Before that customs duties and excise taxes were the primary sources of federal revenue. Answer: The ratification of the 16th amendment.