What laws legalized same-sex marriage?

Answer 1

Some examples are:

1. "Civil Marriage Act" (Canada - July 20, 2005);
2. "Civil Union Act" (Act 17 of 2006) (South Africa - November 30, 2006);
3. "HB7395" (Connecticut - November 12, 2008);
4. "S115 An Act Relating to Civil Marriage" (Vermont - September 1, 2009);
5. "Religious Freedom And Civil Marriage Equality Amendment Act 2009" (Washington, DC - December 18, 2009);
6. "HB 436" (New Hampshire - January 1, 2010);
7. "Marriage Equality Act" (New York - July 24, 2011);
8. "SB 6239" (Washington (state) - December 6, 2012);
9. "Maine Question 1 2012" (Maine - December 29, 2012); and,
10. "Civil Marriage Protection Act - Maryland Question 6" (Maryland -January 1, 2013).

Answer 2

The legalization of same-sex marriage in the United States was primarily due to the Supreme Court case Obergefell v. Hodges in 2015, which ruled that same-sex marriage is a constitutional right under the 14th Amendment. This decision effectively legalized same-sex marriage nationwide.