Arrange the sentences A, B, C, and D to form a logical sequence:
(A) Substantial genetic continuity of population does not preclude profound shifts in culture and identity.
(B) It is actually quite common to observe important cultural change, including the adoption of wholly new identities, with little or no biological change in a population.
(C) Millions of people since Roman times have thought of themselves as 'British', for example.
(D)
Yet this identity was only created in 1707 with the Union of England, Wales, and Scotland.