Thomas Moran was an American artist. He was studied at Hudson River School. Thomas Moran’s dream of the Western landscape was important to the creation of Yellowstone National Park. Moran’s watercolor and pencil paintings and drawings detained the greatness and recognized the amazing landscape and natural features of the Yellowstone region. Moran’s artwork was offered to associates of Congress by park proponents. These potent images of Yellowstone excited the thoughts and supported motivate Congress to launch the National Park System in 1916.