Tower Bridge officially opened in London.
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The first leap second was added to the UTC time system.
Donald Trump became the first US president to visit North Korea while meeting Kim Jong Un.
The US government passed the Indian Trade and Intercourse Act.
Harrison returned to our screens for ''Indiana Jones and the Dial of Destiny.”
An unidentified object thought to be a meteoroid or comet smashed into a remote forest in Siberia and destroyed 21,528 square feet of land.
