The First Battle of the Marne began during World War I.
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7-month-old twins joined at the back of the head were successfully separated.
The Pointe-à-Pitre hurricane hit Guadeloupe killing 6,000 people.
Clarence Saunders founded the Piggly Wiggly store in Memphis, Tennessee, US.
Stephanie Myers published New Moon, the second novel in the Twilight series.
The World Surf League closed the gender pay gap by giving equal prizes to all genders.