The nlys described dimensions of temperament, while rothbart revised it to dimensions of temperament. three; nine five; two two; five nine; three

The answer is: nine; Three
According to Nlys, dimensions that influence an individuals' temperament could be divided into: Activity level, rhythmicity, Approach/Withdrawal, distractibility, attention span, adaptability, reaction to intensity,quality of mood, and responsiveness threshold.
According to Rothbert, the dimensions that influence could be divided into Surgency, Negative effect, and effortful control.

because it represented a natural expression of his ambition

Explanation:

In psychology, natural expression refers to concrete action or behavior that we do in order to show the desire in our heart.

We can see this in Napoleon's action.

Napoleon was known among his peers for his deep desire for power. He often initiate conquests to other territory in order to expand the power of his military,. Establishing Bonapartist dynasty was a natural expression that Napoleon took to strengthen his  political power in Europe.