What did Napoleon consider his greatest triumph in domestic policy?

2 answers

Your text materials will tell you which was the most important.

http://napoleonandthefrenchrevolution.blogspot.com/p/domestic.html
that link is an excellent summary of what happened, but obviously, Napoleon would not agree with the outcomes as stated....He would have preferred a spin that favored him more as the person who was making France great again. He liked to be the star of the show, pushed himself into that role, and sidelined (punished) those who questioned him or his decrees.
As Reed indicates, rely on your text materials on Napoleon's thinking. What we see as the most important may not be what he thought. Your teacher is likely looking for your text answer on this, not someone else's.