Developing a sense of period and chronology by exploring an aspect of the past since 1066

Although much of the Key Stage 2 history curriculum relates to the period before 1066, we are expected to include 'a study of an aspect or theme in British history that extends pupils’ chronological knowledge beyond 1066' (DfE, 2013,p.5)

This raises two questions:
a) How can a post-1066 topic be related to the rest of the primary history curriculum?
b) How can we ensure that it relates to a broader understanding of the past?