Around 1,000 Soviet tanks entered Budapest, the capital of Hungary, after bombing half the city in an attempt to take over.
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Barack Obama became the first African American to win a United States Presidential Election.
A plane crash in South Sudan at Juba International Airport killed 31 people.
Mozart's Symphony No.36 premiered in Linz, Austria.
The Paris Climate Change Agreement went into force.
The first wagon train arrived in California after having left Independence, Missouri, in May 1841.