The first wagon train arrived in California after having left Independence, Missouri, in May 1841.
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After a second siege, Joan of Arc liberated the town of Saint-Pierre-le-Moûtier, France.
J.K. Rowling's first Harry Potter Movie, 'The Philosopher's Stone,' premiered in Leicester Square, London, UK.
Around 1,000 Soviet tanks entered Budapest, the capital of Hungary, after bombing half the city in an attempt to take over.
The Paris Climate Change Agreement went into force.
Physicists in New Zealand observed a record-breaking solar flair.