The Laptev Sea, into which the Lena River empties, helps keep the temperature of the world's northernmost regions regulated, through large blocks of ice that from from the Lena's outflow and then break off when the temperature rises at the river's mouth, drifting off to cool.
The Independence of Haiti (1804) Contenidos Adicicionales. Since the late 17th Century, the French holds the western part of Saint-Domingues Island, Hispaniola. A century later, sugar cane production makes Haiti one of the current most prosperous colonies of the Caribbean, thanks to the new independent United States.
Self-liberated slaves destroyed slavery at home, fought to preserve their freedom, and with the collaboration of mulattoes, founded the sovereign state of Haiti. It led to the greatest slave uprising since Spartacus, who led an unsuccessful revolt against the Roman Republic nearly 1,900 years prior. The Haitian Revolution was the only slave uprising that led to the founding of a state free from slavery and ruled by non-whites and former captives.