Simplify the following text for a Grade 6 native English-speaking person.
Original: Montauban ( Montalban in Occitan ) is a commune in the Tarn-et-Garonne department in the Midi-Pyr Ã nÃ es region in southern France .
Simplified: Montauban is a city in the south of France . It is the capital city of the Tarn-et-Garonne department in the region Midi-Pyr Ã nÃ es .