Same-sex marriage was legalized in Sweden.
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The state of California began issuing marriage licenses to same-sex couples.
Same-sex marriage became legal in all 50 states.
President Barack Obama officially declared his support of same-sex marriage.
Same-sex marriage was legalized in Hawaii.
Elton John and his partner David Furnish registered their civil partnership at Windsor Town Hall on the first day civil partnerships could legally be performed in England.
