Answer:
A. He established a new set of laws based on reason rather than tradition.
Step-by-step explanation:
The answer which best described how Napoléon governed France's empire in Europe is that he established a new set of laws based on reason rather than tradition.
Napoleon, A French military head and emperor Rose to power in France after a successful coup d’état which was led by him in the year 1799.
His decision to enact a new set of laws which is reason based rather than traditional based maybe due to the fact that he imposed himself as the emperor after conquering much landmass in Europe through his highly skilled abilities and wasn't duly elected by the people. He would have followed the path of tradition in setting up the new law assuming he was duly elected.