The first Walmart store opened in Rogers, Arkansas.
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The International Astronomical Union named Pluto's fourth and fifth moons Kerberos and Styx.
The Salvation Army was founded in London by Methodist preacher William Booth and his wife, Catherine Booth.
A peace agreement was signed between King John of England and Prince Louis VIII of France, marking the end of the Siege of Roche-au-Moine, France.
North and South Vietnam were formally reunified after more than twenty years of war.
'Harry Potter and the Chamber of Secrets,' the second book in the series, was published by Bloomsbury in the UK.
