Why do you actually need a passport to travel?
The idea of passports is ancient, dating back to 450 BC.
By : DC Correspondent
Update: 2016-04-25 08:48 GMT
Mumbai: To travel across borders, every passenger necessarily needs a passport. Why you ask? A passport works as a very crucial document which is issued by a government that verifies your identity and gives you the right to travel across nations.
However, there is more why passports are needed and how and when its idea originated. Watch and learn: