Which nations are culturally close to Czech culture, and why?

A bunch of other nations. An obvious first choice are the Slovaks. We Czechs used to share the country with Slovaks. They remain our closest international friend and Slovak is usually not even considered foreign language in Czechia. read more

Pic: This is Central Europe (of which Czechia is the center : D ). Apart from the countries I mentioned above, all other countries in color on this map are relatively culturally close to Czechia. read more

#3 in Best Countries: Cultural Influence #8 in Best Countries. The National Museum of Natural History in Washington, D.C., had 7.1 million visitors in 2016. read more

The Czech Republic is a fairly densely populated country, with about 340 persons per square mile. The highest population density is in metropolitan Prague ( Praha ), which has 1.3 million inhabitants. read more