Final answer:
The country that saw the first successful slave rebellion in the Americas, leading to its independence as the second country in the Americas after the United States, is Haiti.
Step-by-step explanation:
Once considered the jewel of French colonial possessions, the country that was home to the first successful slave rebellion and became the second country in the Americas to gain independence (after the United States) is a) Haiti.
During the late 18th century, the French colony of Saint-Domingue, located on the Caribbean island of Hispaniola, was the most profitable colony in the Americas, largely thanks to the labor of enslaved Africans who worked on sugar, coffee, and indigo plantations. Inspired by the French Revolution, the enslaved population, under the leadership of Toussaint Louverture and later Jean-Jacques Dessalines, began a rebellion in 1791. This rebellion eventually led to the independence of Haiti in 1804 after a brutal conflict that ousted French authority and abolished slavery.