There are four different blood types: type-O, type-A, type-B and type-AB. Type-O, the most common, is known as the universal donor because any person can receive a blood transfer of type-O blood. Type AB is known as the universal receiver because type-AB can receive a blood transfer of any type of blood.
Jean Baptiste Point du Sable, an immigrant from Saint-Domingue (now the Republic of Haiti), founded the first nonindigenous settlement in what is now Chicago, Illinois, the third largest city in the United States. The state of Illinois and city of Chicago declared du Sable the founder of Chicago on 26 October 1968.
In August of 1791 an organized slave rebellion broke out, marking the start of a twelve-year resistance to obtain human rights. The Haitian Revolution is the only successful slave revolt in history, and resulted in the establishment of Haiti, the first independent black state in the New World. One must emphasize the struggles that had been occurring for decades prior to the 1791 outbreak of full-scale rebellion.