Barbed wire was patented by Lucien B Smith in Ohio, US.
Source
Florida, one of the confederate states, was readmitted to the Union.
American colonies recorded their first astronomical event after observing a lunar eclipse.
Former police officer Derek Chauvin was sentenced to 22.5 years in prison for the murder of George Floyd.
The rainbow flag was flown for the first time at the San Francisco Gay Freedom Day Parade.
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.
