The first wagon train arrived in California after having left Independence, Missouri, in May 1841.
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London launched its first tram, built by George Francis Train from NYC.
California became the 31st state to join the United States of America.
NASA's Discovery Space Shuttle landed in California after completing its maiden voyage.
Disney's Moana premiered in Los Angeles, California, US.
University of California scientists found evidence that life on Earth probably began 4.1 billion years ago.
