Yes. Same-sex marriage is legal in North Dakota effective June 26, 2015.
Yes. Effective June 26, 2015, a "same-sex" marriage certificate is sufficient proof of legal name change in North Dakota.
Yes. Same-sex marriage is legal in South Dakota effective June 26, 2015.
No, civil unions and domestic partnership are not legally defined in North Dakota.
No
Same-sex marriage is legal in North Carolina effective October 9, 2014.
Same-sex marriage became legal in North Carolina on October 9, 2014.
No. There is no legal recognition of such marriages in North Korea.
When they are no longer a minor. Which would be when they turn 18 in North Dakota.
In the related links box below, I posted the North Dakota areas with a ban.
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As of 2020, there have been approximately 800 same-sex marriages performed in South Dakota since it was legalized in 2015.