Treaty of London
With France ravaged by rebellion, war, and wandering bands of brigands, King John the Good, has agreed to give King Edward III of England half of France in the Treaty of London. However, King John is under duress as a hostage so his agreement must be ratified. When the Treaty reaches France, King John's son, Charles the Wise, is less than willing. He gathers the nobles and as they read the Treaty they realize that no country could ever agree to such a thing. It is a veiled declaration of war. Upon rejection of the Treaty, King Edward launches yet another attack on France. It is poorly planned, but like jumping off a cliff, once begun, you are committed. King Edward fully expects that the French will surrender once they see him coming. Instead, they refuse to join battle, causing King Edward's forces to get bogged down in lengthy sieges as winter closes in around them.  
French Financial Crisis
Economic conditions in France are grim. In order to jump start the economy, the heir apparent, Charles the Wise, invites the Jews back to France to help stabilize the economy. The Jews will remain in France for the next 70 years. Next year the French franc will be issued. It will replace the livre tournois. It commemorates the freeing of King John the Good of France from English captivity because "franc" means "free". His freedom won't last long. The French hostage who took his place will escape and the French King will return to England to honor his parole.  
This Year on Wikipedia
Year 1359, Wikipedia.
- Grun, Bernard. The Timetables of History: A Horizontal Linkage of People and Events. New York: Simon and Schuster. 1991. p. 192. (BOOK) quote="Treaty of London restores French possessions once held by Henry II of England to English crown"
- Tuchman, Barbara Wertheim. (Barbara Tuchman, bio). A Distant Mirror: The Calamitous 14th Century. Ballantine, 1979. Chapter 8. (BOOK) quote="By the time the King embarked, taking with him his four eldest sons, it was the end of October, ensuring a winter campaign. All military experience, including his own, knew this to be ruinous to a force away from its home base, but the impetus of great preparations is hard to halt, and possession of many garrisons in France gave Edward confidence in a quick victory."
- Grun, Bernard. The Timetables of History: A Horizontal Linkage of People and Events. New York: Simon and Schuster. 1991. p. 192. (BOOK) quote="(1360) Treaty of Calis between Edward III and Philip of Burgandy"
- 1359, from Jewish History. (WEB SITE)
- Grun, Bernard. The Timetables of History: A Horizontal Linkage of People and Events. New York: Simon and Schuster. 1991. p. 193. (BOOK) quote="(1360) The first francs coined in France"