making The Czech empire

Reasons why I add this land:

Silesia (Poland and Germany): It was part of Czech kingdom during medivial ages and also part of Czech republic is called Silesia.
If you want to know more search on Wikipedia: Silesia

Slovakia + Carpathian Ruthenia (Ukraine): They were parts of Czechoslovakia before WW2.
If you want to know more search on Wikipedia: Czechoslovakia

Kaliningrad (Russia): Because of meme, when Czechia made a petition about annexation referendum in Kaliningrad where the votes will be 98% in favor for joining, just like when Russia held similar referendum in Ukraine and the votes were similar.
If you want to know more search on Wikipedia: Královec Region

song name and author: Istanbul (Not Constantinople) - They Might Be Giants