One of the most significant legal documents in the world is a passport. Here are some fascinating passport-related facts that everyone should be aware of. One function of a passport is to demonstrate to other countries that you are a legitimate citizen of your country of origin. If flying, a person must repeatedly show their passport at the airport, and if driving, they must do so at the border. One item a person needs in order to go to another country is a passport. The most crucial paperwork for entering any nation is this one. A person cannot travel from one nation to another without a passport. A passport is a formal document that contains information about a person's citizenship. You couldn't enter any country without the document.