Pope Leo II became the bishop of Rome.
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Three Americans made the first successful Atlantic Ocean crossing by hot air balloon.
The Clermont steamboat by Robert Fulton made its maiden trip up the Hudson River.
Charles Reed Bishop founded First Hawaiian Bank and opened its first branch in Honolulu.
William B. Purvis patented the electric switch on railways that would shut off the electric supply after carriages pass the contact device.
Balloonist John Wise started the world's first airmail service by balloon from Lafayette to Crawfordsville, Indiana.
