I believe it would either be country or southern gospel
French involvement in the American Revolutionary War of 1775–1783 began in 1775, when France, a hotbed of various radical Enlightenment ideas and long-term historical rival of the Kingdom of Great Britain, secretly shipped supplies to the Continental Army when it was established in June 1775.
With more than one ruler the empire would be better suited to protect itself from threats from barbarians and persia