Which of these is a famous American horse breed?

The Morgan horse is one of the earliest horse breeds developed in the United States. Morgans served many roles in 19th-century American history, being used as coach horses and for harness racing, as general riding animals, and as cavalry horses during the American Civil War on both sides of the conflict. In 1907, the US Department of Agriculture established the US Morgan Horse Farm near Middlebury, Vermont for the purpose of perpetuating and improving the Morgan breed. The Morgan is the state animal of Vermont and the state horse of Massachusetts and the state mammal of Rhode Island.

Source: Wikipedia