Toshiba rolled out a four-legged robot designed to clean up after nuclear disasters.
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The American state of New Jersey was the first state to ratify the Bill of Rights.
Beethoven premiered Fidelio in Vienna, Austria, which was his only opera.
MTV and Harmonix released Rock Band for PS3 and Xbox 360 in North America.
Roman soldier Diocletian was appointed the new Roman Emperor after Roman Emperor Carus's death.
DC Comics released Flash Comics Issue 1, featuring Flash Gordon.