What are the uses and importance of passport and visa?

Answer 1

Passports provide official documentation of your identity. They also carry a formal request from your government to other governments that they give you all lawful aide during your travels. Visas grant you permission to enter a country other than your own and to stay there for a defined period of time.

Answer 2

A passport allows a person to go from one country to another. Some countries require people of some other countries to have a visa to get in as well as a passport. In the US people from Canada can enter with a passport and stay for 3 months. If they want to work or study they need a visa. A passport allows a person in and a visa allows them to stay for a specific purpose.

Answer 3

A passport and sometimes a visa are required for you to travel to forign countries. And a passport is required to return to your home country. Sometimes bordering countries do not require passports. Before 9/11 you could travel to and from Canada and Mexico without a passport, but not anymore.