Pope Leo II became the bishop of Rome.
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The Bank of Italy opened in San Francisco, California, and would later become Bank of America.
Balloonist John Wise started the world's first airmail service by balloon from Lafayette to Crawfordsville, Indiana.
King Charles IX of France became an adult on his 13th birthday.
Solymon Merrick patented the wrench tool.
Asaph Hall discovered Mars' second moon, called Phobos.
