Need to know, from where the Country . State / Region and City is getting populated in oracle projec

Hi,

I would like to update the State Region  & City fields in the oracle projects, and also would like to know from where the Country LOV is getting populated from>

Navigation

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Open any projects -> Under Options -> Additional Information -> Click on Details Button -> Under Location we can see Country, State / Region and City

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I need to update the Stage / Region and City LOV, from where these LOV are getting the values from.

Additionally if anyone could provde the details about Country field (from where the values are getting fetched), it would be very helpful

Thanks & Regards

Venkat