Inventor Benjamin J. Lane patented the first self-contained gas mask.
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North and South Vietnam were formally reunified after more than twenty years of war.
The first Walmart store opened in Rogers, Arkansas.
Martin Luther was almost struck by lightning and became a monk.
Charles J. Guiteau shot US President James A. Garfield in Washington, D.C.
Inventor Thomas Savery patented the first steam engine in England.
