To complement the poll about which states dopers have visited, here’s a poll about which countries they have visited. The same rule applies: you must have set foot in the country, outside an airport, to count as visiting. Flying over, taking a train through, and changing planes at an airport do not count.
Since there are more than 100 countries, I’ve just listed 99. They are the top 99 countries in the list on this Wikipedia page, excluding Hong Kong, by population. So the smallest is Papua New Guinea, population 6,732,000. If you’ve been to other countries, tick “other”, and list which they are.
(And it will take me a while to list all the countries, so be patient )
Sweden is there. However, the other two are small in population: Denmark 5.5 million and Norway 4.9 million. I was limited to just 100 choices. Perhaps Denmark and Norway should unite – they speak the same language, after all – and get into the top 100.