The Arabian is such a very old breed. In fact, horses looking very similar to Arabians are depicted in cave paintings from 4000 years ago. Because of this, its origins will never be full known. What is known is that these horses were sold to Europeans by the Bedouins of Arabia, and it serves as the foundation for many other breeds, from the Thoroughbred to the Morgan. It was the favorite horse breed of Napoleon Bonaparte and George Washington.
Arabian horses have spread all over the world. They are common in the United States, South America, Russia, Europe, and of course, the Middle East, and Africa.