@islamabadian.....

you have produced a good answer to this question and i think this question may appear next year in the paper.
But inorder to get good marks in your paper try to be more analytical and give view points of note worthy authors like Lanepoole,S.M.Ikram,Ishwari Parsad,Gibbon etc.By adding quotations in one's answer one can give a very good impression and it makes the answer more worthwile.
Secondly Mehmood has been criticised by many that he was not much an empire builder and he just came here to plunder etc there are divergent opinions about that.
On the other hand M.Ghauri was an empire builder.He established the first full fledged Muslim Kingdom which was inherited by Qutbudin Aibek after him.You should incorporate these points in your answer.....

Regards.

__________________
M-M-M