response: I didn't know Ted Roosevelt was involved, but I do know that the US has 59 national parks that the National Park Service operates in.
original_response: That sounds right, but I'm not sure. I do know that Yellowstone is one of 59 protected areas known as a national park, so it's definitely in a small group of national treasures.
history: Have you ever visited Yellowstone National Park? It's a cool place! I haven't but it was the first national park signed into law through President Ulysses S. Grant during 1872. That's very true. Tedy Roosevelt also had a lot to do with National Parks too  I believe.
knowledge: The United States has 59 protected areas known as national parks that are operated by the National Park Service, an agency of the Department of the Interior.