Why would a DNA heritage test say you are from a particular place if that particular place was occupied by multiple other empires historically?

Question

For example, my test came back Sicilian, and British. But both places have had various other countries occupy them in the past.

In: Biology

Answer 1

Huh? Why do you think who controls a particular piece of territory has anything to do with the DNA of the people who live there? Do you think the DNA of all the people who lived in India suddenly changed when India gained independence from the UK?