Why are white people called caucasians when they're not even from the caucasus region?

Anonymous
Why are white people called caucasians when they're not even from the caucasus region?
Most 'caucasians' are actually from the west Asian continent if we're talking region wise, Georgia, Armenia, Azerbaijan, and also a part of southern Russia around the Caucasus mountains. And even if we were very far distant related to people of the caucasus region, wouldn't that be like saying whites are African cause far in the distant past Europeans were once african? So why should 'caucasians' even be used?

Doesn't make much sense to me.
Why are white people called caucasians when they're not even from the caucasus region?
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