Quick what does the United States have in common with Serbia and Yemen? No, not just that they all have the vowel E in them. No, not because they start with letters in the second half of the alphabet. And no, not nothing either. According to popular estimates, the US, Serbia and Yemen make up the top 3 in countries of the world that have the most guns per 100 people. We’re number one, unsurprisingly. Wikipedia’s numbers say we have 94.3 guns per 100 people while Serbie has 58.2 and Yemen has 54.8. No other country has more than 50.