Mozart’s Symphony No.36 premiered in Linz, Austria.
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The first wagon train arrived in California after having left Independence, Missouri, in May 1841.
A British-led team of archaeologists located the entrance to Tutankhamun's tomb.
The Paris Climate Change Agreement went into force.
A chimpanzee was observed for the first time making and using tools.
Barack Obama became the first African American to win a United States Presidential Election.
