Answer: Russia

When it comes to having a wide array of unique land borders, two things stack the odds in your country’s favor: sheer size combined with geographic and ethnic diversity around your country. Some countries, like Australia and the United States, have the size part down pat, but either lack land borders to begin with or border other large countries and thus have very few unique points of contact with other areas.

Russia, on the other hand, is both an enormous country and situated right in the middle of a diverse area. It shares a whopping 17 unique land borders with 16 different countries: Azerbaijan, Belarus, People’s Republic of China (2 unique borders), Estonia, Finland, Georgia, Kazakhstan, North Korea, Latvia, Lithuania, Mongolia, Norway, Poland, Ukraine, South Ossetia, and Abkhazia.

Bonus Trivia: While China currently has as many unique land borders as Russia, it shares those borders with only 13 different countries.