Which of the following breeds originated from East Coast United States?

The American Saddlebred is the breed that originated from the East Coast of the United States. This breed was developed in the late 17th and early 18th centuries in the region, specifically in areas like Kentucky and Virginia. American Saddlebreds were initially bred for their versatility, and they became popular as riding and driving horses due to their smooth gaits and pleasing demeanor.

Thoroughbreds, while also American breeds, primarily trace their roots back to England. Quarter Horses are known for their speed and strength in short-distance racing and were developed in the Southwestern United States, primarily in Texas. Clydesdales are a draft horse breed that originated in Scotland, not the United States. Understanding the geographical origins of these breeds is crucial when studying equine genetics and breed development.