Monarchy if you are talking about a U.S. state
An extensive group of states or countries under a single supreme authority, formerly especially an emperor or empress.
While some French Canadians emigrated to the United States for political reasons, namely young men trying to evade military conscription during the First World War or rebels who had chosen to side with the American patriots during the American Revolution or who had participated in the Lower-Canadian rebellions of 1837-
<span>September 1, 1939 – September 2, 1945</span>