Former President Barack Obama gave his nominee acceptance speech.
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The First Battle of the Marne began during World War I.
The Philadelphia Eagles beat the Green Bay Packers 34-29 in Brazil in the first NFL game in South America.
7-month-old twins joined at the back of the head were successfully separated.
The Indian Space Research Organization's Vikram Moon lander crash-landed on the moon.
'Victoria' became the world's first recorded ship to have circumnavigated the globe when it arrived back in Spain.
