Why the Angevins (Plantagenets) Ruled Half of Europe

When most people think of medieval kings, we generally think of one monarch, one kingdom, and then the people below him.. But Henry II of England—first of the Angevin kings—was no ordinary ruler. By the 1170s, he commanded more territory than any other monarch in Christendom, stretching from the wild hills of Northumberland to the sunlit vineyards of Aquitaine. He was king in only England—he was the Norman and Aquitainian duke, the count of Anjou, Touraine, and Maine. But is was all his dominion, and it was so vast that chroniclers called it an “empire,” though it was stitched together by marriage, inheritance, and sheer force of will.

So how did a French count’s son come to rule half of Europe?