Why is 1799 used as the dividing point between the French Revolutionary wars and the Napoleonic Wars?

The year 1799 is used as the dividing point between the French Revolutionary wars and the Napoleonic Wars primarily because it marks the establishment of the Consulate under Napoleon Bonaparte.1

This transition was solidified by the Coup of 18–19 Brumaire, which occurred on November 9–10, 1799. During this event, Napoleon overthrew the Directory, the existing French government, and replaced it with a new consular system. While the French Revolution is often considered to have effectively ended with this coup, the military hostilities that began in 1792 continued, evolving into the Napoleonic phase. This later period was characterized by the extent to which Napoleon retained and extended the political and social innovations of Revolutionary France throughout Europe.2314