How are these two groups of people related?
Sunak much darker than what that photo is depicting.
They, among others like the Celtics, Germans, indians, the french, Italians, slavs etc. are from the same linguistic group. The indo Europeans. Just like black Africans are largely bantu or niger-congo speaking with a few exceptions. This is means they share a lot in the past.
They are not.
Are you sure what you are talking about? Italians and Spaniards are Mediterranean people. In fact have a lot of African DNA. Just look closely at a North African and an Italian, you will see a striking resemblance.
In fact the unadulterated diet of Italy is largely Mediterranean. But I am not a archeologist.