Last updated on March 10th, 2020
References:
- https://en.wikipedia.org/wiki/Bulgaria
- http://bulgariatravel.org/
- http://wikitravel.org/en/Bulgaria
- http://www.infoplease.com/country/bulgaria.html
- https://www.britannica.com/place/Bulgaria/
- http://www.slavorum.org/20-facts-about-bulgaria-that-you-didnt-know/
- http://www.novinite.com/articles/131706/20+Fascinating+Facts+You+Never+Knew+about+Bulgaria*
- http://www.mydestination-bulgaria.com/usefulinfo/unknown-and-fun-facts-about-bulgaria
- http://co.uk/2014/02/10-interesting-facts-you-probably-didnt.html
- https://xixerone.com/en/fun-facts-about-bulgaria/
- http://truenomads.com/2013/11/facts-about-bulgaria/
- http://www.travelingeast.com/europe/bulgaria/ten-interesting-facts-about-bulgaria/
- http://9gag.com/gag/4033351/facts-about-bulgaria
- http://www.dangerous-business.com/2012/11/8-things-you-might-not-know-about-bulgaria/
- http://www.funkidslive.com/learn/where-in-the-world/bulgaria-2/
- https://en.wikipedia.org/wiki/Human_trafficking_in_Bulgaria