Minimum number of Citizenships required to get Visa Free Passport to all countries of the world?

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?

  • 2
    Is there any practical reason someone needs to know this? – rene Mar 7 at 21:05
  • None if you are not looking to travel the world using counterfeit passports.I think this answer will be pretty intriguing to someone like Jason Bourne. In seriousness,I asked this question much more from a non practical view point. – Akhil Sharma Mar 8 at 5:08
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    That is a bit of a problem. On most SE sites, the questions need to be of practical nature. The ones that are just for the curious tend to be not well received. Beyond that the answer would require a lot of digging and might go stale soon-ish as these visa rules can change overnight. – rene Mar 8 at 8:51
  • Travel.SE has lots of factoid questions, so it could be thought of as hypocritical if they closed this question. But maybe they have rules for factoid questions, I don't know. – curiousdannii Mar 9 at 1:33
  • Currently,The Question has been closed by Politics SE.After seeing so many upvotes and so many Downvotes on this thread here on Meta SE itself,and votes to close and then to reopen on Travel SE and Finally close on Politics SE,I can infer that the community is by itself divided on it or maybe this question does not belong on SE in its current form. – Akhil Sharma Mar 9 at 10:05
  • I shall delete the Question and maybe Re-frame the Question.Please consider this Question closed. – Akhil Sharma Mar 9 at 10:08

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