Finland declared war on the Soviet Union after an air raid was launched on Finnish cities.
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Florida, one of the confederate states, was readmitted to the Union.
Former police officer Derek Chauvin was sentenced to 22.5 years in prison for the murder of George Floyd.
North Korea sent 75,000 soldiers to invade South Korea, which would start the Korean War.
The Supreme Court of the United States decided on the rule that police cannot examine the contents of a cell phone without a search warrant.
The Diary of a Young Girl by Anne Frank was published.
