The teacher might not been able to answer this because in Pakistan teacher is a person who either is in job search or who have not find any “decent” job…
there a vey simple answer to this, but lets keep it to the history section.. as for Paracha, if Mohammad bin Qassim was invader then what would you call Pathans residing in Indo-Pak region for 1000s of years and who were here mostly with an invader like Mehmoog Ghaznavi or Mohammad Khan Ghori or Babar??? what should we do to them??? or what should we do to Arians who invaded Sub-Cont. few thousand year back???