A passport is an official travel document issued by a country’s government to its citizens, allowing them to travel internationally and return to their home country. Passports serve as proof of identity and nationality and are crucial for international travel. Here are some key points about passports:

1. Identification and Nationality: A passport serves as a primary form of identification and is proof of an individual’s nationality. It contains essential personal information, including the holder’s name, date of birth, photograph, and signature.

2. International Travel: Passports are required for international travel. They are used when crossing international borders, either by air, land, or sea. A valid passport is essential for entry into most foreign countries and for re-entry into one’s home country.

3. Visa Requirement: In addition to a passport, travelers often require a visa issued by the destination country to enter and stay for a specified period. Visa requirements vary by country and depend on the traveler’s nationality and the purpose of their visit.