Napoleon gained power through a coup d'etat that was a

The Coup of 18 Brumaire...

Explanation:

...brought General Napoleon Bonaparte to power as First Consul of France and in the view of most historians ended the French Revolution. This bloodless coup d'état overthrew the Directory, replacing it with the French Consulate.

yes.

explanation:

because it let the japanese know who had the upper hand in the war.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.