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If you’re a frequent international traveler, you probably look forward to the next stamp that will be added to the collection of pages inside. But as you approach airport security, clutching the document in your hand, have you ever wondered just how powerful it is? The answer depends on your passport’s country of origin. A tool called Passport Index aims to help curious travelers rank countries based on how easily their citizens can travel the globe. According to the system, passports accumulate points for each country their holders can visit without a visa. When totaled, the sum equals the passport’s “Visa Free Score.”

Source: Passport Index

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