Turbulance or lightning strike we are not sure yet. Although neither of them should have brought a plane down which is why it doesn't make sense.
a war
check out this very useful document (especially page 2): www.globaltravel.com.sg/images/AFKLM-baggage-policy-upd25Jan07.pdf
Toussaint, (all saints day) Bastille Day, (the storming of the Bastille, a french prison) and Fete Du Travail (workers day).
I think there may have been some wars between England and France during the 1500s
1789 was the beginning of the French Revolution.