In the United States, pizza will definitely be the staple food of most parties and parties. Americans like pizza very much and eat 100 acre of pizza every day. Not only Americans like eating, but most people in the world like eating very much. Its unique taste and variety are very suitable for parties and queues. So the United States has also produced many pizza restaurants with a long history and global chain stores, such as Papa John's, 1985 opened in the United States, and now there are more than 5,000 chain stores in more than 45 countries around the world.