Because many Romans refused to fight in the war Foreign mercenaries also provided Rome with more manpower. The Roman empire was huge and there simply were not enough Italian soldiers to fill the ranks of the legions. In addition, the foreign troops could aid the Roman forces as many of them were expert in certain specialty types of warfare such as bowmen and slingers. hope this helps
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.
I don’t know what to do :)