This is known as the Peasant Revolt
In June rebels from Esscex and Kent marched toward London. On the 13th the Kentish men, under Wat Tyler, entered London, where they murdered some Flemish farmers.
Answer:
Charlemagne was a King of Franks. I actually just learned this so I hope my answer helps :)
If you are talking about the Revolutionary War, I believe that the French brought the Patriots supplies when they were in need.
