The quick answer is yes.
More than likely, everyone in the world has a common ancestor back in history.
If you believe in the bible, then we are all spawns of Noah. If you believe in another religion or that aliens put us here. We all come from a single source; science continues to show this is true.
There is no question that at some point, groups of humans migrated over different parts of the earth, and then over time, particular distinctions became part of the makeup, even to the point of changing DNA.
Rules were made; this is who we are, language, customs, the society you were born into shapes who you become.
We need to define for ourselves how far back through the generation do you wish to claim. With the many different ways we can track our heritage, we now have options that did not always exist. What you do with this information can change your outlook on life or be no more than a passing thought.
Ethnicity and race have been blended together and made the same. When you study these two subjects, you learn there are substantial differences between the two. Blending them together causes destruction, then, over time, a new group is created.
A thought to ponder.
Do you wish to be part of the old or the new?