UK History: Chapter 2, Exercise 3 — Possible Solution
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WHY THEY DO NOT NECESSARILY CONTRADICT
The 2022 genetic study measured ancestry in eastern England (25 to 47 percent
northern continental, with regional variation). The names Cerdic and Penda
concern a few rulers. Large-scale migration into one region and British
participation in kingdom formation could both be true.

WHAT YOU WOULD NEED TO KNOW
- The study's sample sizes and locations.
- How representative the named kings are of rulers generally.
- Whether the regions studied match where those kings ruled.