The Yellowstone Nationalpark is a Nationalpark in the United States. It was founded at the 18th of March 1872. The Yellowstone Nationalpark is the oldest Nationalpark in the whole world. The most important river in the Nationalpark is the Yellowstone River. The Nationalpark is known for its wild animals such as bisons, grizzly bears and wolves. Cougars can be found in the deeper areas of the park. The average temperature in January is -13°C-and in July 27°C. In the Yellowstone National Park 318 bird species have been recorded and registered. Until the beginning of the Second World War the number of visitors rose to 581,000 visitors a year. The number of visitors dropped then three years later (1944) to 85,000.
So die fettgedruckten Sachen habe ich verbessert und zusätzlich noch ein paar Kommas und Kram. Keine Garantie dass jetzt alles 100%ig stimmt, aber ein paar Sachen habe ich auf jeden Fall gefunden :)