One billion people logged into Facebook for the first time, surpassing a major milestone.
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Ukraine separated from the Soviet Union, marking this day as Ukraine’s Independence Day.
Allied troops began the attack on Paris during World War II.
The first installment of concrete was poured into the Panama Canal.
The Central Italy earthquake occurred.
Nurse William Pooley, who was treating patients in Sierra Leone, flew to London for emergency treatment after contracting Ebola.