Tower Bridge officially opened in London.
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Charles Blondin became the first person to cross Niagara Falls by walking across a tightrope.
Charles J. Guiteau was hung until dead for the assassination of US President James A. Garfield.
The US government passed the Indian Trade and Intercourse Act.
Donald Trump became the first US president to visit North Korea while meeting Kim Jong Un.
The first leap second was added to the UTC time system.
