would a Jewish person be considered Caucasian
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).
well it's kind of complicated. Judaism is a religion and not an ethnic group, so anyone can be Jewish. The use of the term in relation to ethnicity usually means a person that traces their lineage to the original inhabitants of the nation of Israel, which was where Judaism was founded. Technically, Israeli people are considered to be Caucasian because the term is based on geographical location and not on race/ethnicity.
The problem in this case is that other people in the middle-east or near-east aren't Caucasian but they share the same ethnic ancestry as those that are. On the other hand, you have European Caucasians that don't share the same ethnic ancestry as other middle-eastern Caucasians.
The middle east is divided up by geographic regions: The Anatolia Peninsula in the north west, the Levant or eastern Mediterranean (where Israel is located), Mesopotamia in the middle, these people are usually classifed as Caucasian. Then you have the Persian Plateau to the east, and the Arabian Peninsula to the south-east, not usually classified as Caucasian. Each one of these regions has ethnic/cultural groups more or less in common and distinct from the others.
Pretty much all of these people come from the ancestry of the original inhabitants called the Semites, a bunch of different groups of people that all share the same roots of language. basically everyone from the different regions has conquered each other multiple times, as well as the area also having been conquered by Europeans and Asians. So pretty much the exact lineage of anyone in the middle east is kind of hard to determine, even though they all hate each other and insist that they are different.
basically it's kind of hard to come up with any biological basis for what differentiates races, and I'd say nearly everyone on the planet, except for small groups of indigenous peoples that have never migrated or been conquered, has an ancestry that involves interracial mixing at some point.
The again everyone on the planet can trace their lineage to a group of about 3,000 people that lived in Africa around 150,000 years ago, so we're all black.
problem solved. go fuck yourself KKK.