Loreen claimed victory for Sweden at the 67th Eurovision Song Contest with her song “Tattoo.”
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The US Women's Army Auxiliary Corps (WAAC) was formed.
Delegates started to gather in Philadelphia to draw up the US constitution.
Edward Jenner, an English country doctor, gave the first vaccination against smallpox.
Underground America Day was first observed, which recognizes the approximately 6,000 people who live in some form of underground architecture across North America.
We Want Beer! parade was held.
