Miss USA Nia Sanchez ... who famously couldn't name the capital city of Nevada -- even though she competed as Miss Nevada -- paid her first official visit Wednesday to, um, that place.
The brunette beauty traveled to Carson City to meet with Mayor Bob Crowell … who diplomatically neglected to mention Nia's faux pas.
Sanchez caught some heat for competing in Miss NV, even though she grew up in Cali -- classic carpetbaggery -- and she only made matters worse when she wasn't able to name Nevada's capital.
Sources close to Nia tell us … she purposely made Carson City her first stop on her Nevada apology homecoming tour … since winning the Miss USA crown last month.
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