Simplify the following text for a Grade 11 native English-speaking person.
Original: Ù Ø ) was created in 1951 before which the Mohmand Tribes were administered by the Deputy Commissioner based in Peshawar , North-West Frontier Province , Pakistan .
Simplified: Ù Ø ) is a district in the Federally Administered Tribal Areas of Pakistan created in 1951 . Before that , the Mohmand Tribes were administered by the Deputy Commissioner based in Peshawar , Khyber-Pakhtunkhwa province of Pakistan .