Ever heard of a war started over pastries? In 1838, France went to battle with Mexico after a French baker claimed his shop was trashed during a Mexican uprising. What followed was a full-on naval blockade, cannon fire, and even the dramatic return of Santa Anna—all over some damaged doughnuts. The Pastry War is one of history’s most bizarre (and delicious-sounding) conflicts, proving you should never mess with a man's croissants.