Toshiba rolled out a four-legged robot designed to clean up after nuclear disasters.
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A 15-week abortion ban in Mississippi was declared unconstitutional.
English singer-songwriter Adele released her third studio album, '25.'
Roman soldier Diocletian was appointed the new Roman Emperor after Roman Emperor Carus's death.
Queen Elizabeth II married Philip Mountbatten at Westminster Abbey in London.
The American state of New Jersey was the first state to ratify the Bill of Rights.
