Why Do So Many Countries End In -Stan?

[Jazzy]

Why Do So Many Countries End In -Stan?

Central Asia is full of lands whose names end in -stan. A certain powerful North American country has a related name. How? It's not your standard explanation.
https://www.youtube.com/watch?v=yXc3ExJGVYw

I had no idea, did you?

 

[Nebulous]

Oh, makes sense I suppose. Thanks for sharing.

 

[Evil Eye]

I knew what it meant; I didn't know it shared a root with all those other words though.