There's one historical artefact that tells us exactly why William the Conqueror thought he should be King of England. It's over 230 feet long and over 900 years old. Its the Bayeux Tapestry.

What it tells us about the past: This tapestry was first recorded in 1476 as part of the inventory of the Bayeux Cathedral, but it was likely commissioned in the 1070s by Bishop Odo, a close relative ...

For this reason, he is often called William the Conqueror. Scenes on the tapestry give historians key information about this period not known from other sources. For example, the tapestry shows ...