Where does “Пакистан” come from?

Пакистан (Mongolian) comes from English Pakistan, from Urdu پاکستان, from Classical Persian پَاک.

Ancestry of “Пакистан”, step by step

StepLanguageWordMeaning
1EnglishPakistan—
2UrduپاکستانLand of the Pure
3Classical Persianپَاک—
Every word from Classical Persian پَاک →Every word from Urdu پاکستان →Every word from English Pakistan →