Fill in the blanks in the text about national parks.

The first national park appeared in the USA in Yellowstone. In Britain, the first national park appeared in the Peak District. Now there are more than 50 national parks in the USA and 15 national parks in England and Wales. The aim of the national parks is to protect nature and let people enjoy these places. One of the most interesting national parks in the USA is the Everglades in Florida. Many rare animals and birds are protected in the Everglades. The Lake District is the most popular national park in Britain. It is one of the most beautiful places in Britain. It has the biggest lake and the highest mountain in England.