Visa-free refers to the ability to travel to a foreign country without the need for a travel visa. In such a case only a valid passport is required for entry and exit purposes
I was just wondering what is the minimum number of passports one would require to get Visa Free Travel to all the countries of the world?
Edit: For our purpose,please consider ESTA/ETA/eVisitor/etc same as Visa Free.
And to avoid any confusion,only 197 member states of UN shall be considered as country. Category:Member states of the United Nations
Previously,I asked it in Politics SE which was then moved to Travel SE.It has been suggested that it does not fit there also because it is not - as required by the Travel SE Help page - a question based on actual problems faced by the OP. So I was wondering,If there is a place for such questions on SE?