A travel passport is an official government document that certifies a person's identity and nationality. It allows individuals to travel internationally and serves as proof of citizenship. Passports typically include personal information such as the holder's name, date of birth, and photograph, along with a unique passport number. To obtain a passport, individuals must apply through their country's passport agency, providing necessary documents like a birth certificate and identification. Passports are essential for crossing international borders and may be required for visa applications when visiting certain countries, such as those in the European Union or United States.