England ⁱ/ˈɪŋɡlənd/ is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, while the North Sea to the east and the English Channel to the south separate it from continental Europe. Most of England comprises the central and southern part of the island of Great Britain in the North Atlantic. The country also includes over 100 smaller islands such as the Isles of Scilly and the Isle of Wight.

The area now called England was first inhabited by modern humans during the Upper Palaeolithic period, but it takes its name from the Angles, one of the Germanic tribes who settled during the 5th and 6th centuries. England became a unified state in AD 927, and since the Age of Discovery, which began during the 15th century, has had a significant cultural and legal impact on the wider world. The English language, the Anglican Church, and English law—the basis for the common law legal systems of many other countries around the world—developed in England, and the country's parliamentary system of government has been widely adopted by other nations. The Industrial Revolution began in 18th-century England, transforming its society into the world's first industrialised nation. England's Royal Society laid the foundations of modern experimental science.

Henry I (c. 1068/1069 – 1 December 1135) was the fourth son of William I of England. He succeeded his elder brother William II as King of England in 1100 and defeated his eldest brother, Robert Curthose, to become Duke of Normandy in 1106. A later tradition called him Beauclerc for his scholarly interests— he could read Latin and put his learning to effective use— and Lion of Justice for refinements which he brought about in the royal administration, which he rendered the most effective in Europe, rationalizing the itinerant court, and his public espousal of the Anglo-Saxon legal tradition.

Henry's reign established deep roots for the Anglo-Norman realm, in part through his dynastic (and personal) choice of a Scottish princess who represented the lineage of Edmund Ironside for queen. His succession was hurriedly confirmed while his brother Robert was away on the First Crusade, and the beginning of his reign was occupied by wars with Robert for control of England and Normandy. He successfully reunited the two realms again after their separation on his father's death in 1087. Upon his succession he granted the baronage a Charter of Liberties, which linked his rule of law to the Anglo-Saxon tradition, forming a basis for subsequent limitations to the rights of English kings and presaged Magna Carta, which subjected the king to law.

Henry II (5 March 1133 – 6 July 1189), also known as Henry Curtmantle, Henry FitzEmpress or Henry Plantagenet, ruled as King of England (1154–89), Count of Anjou, Count of Maine, Duke of Normandy, Duke of Aquitaine, Count of Nantes, and Lord of Ireland; at various times, he also controlled Wales, Scotland and Brittany. Henry was the son of Geoffrey of Anjou and Matilda, who was the daughter of King Henry I and took the title of Empress from her first marriage. He became actively involved by the age of 14 in his mother's efforts to claim the throne of England, and was made the Duke of Normandy at 17. He inherited Anjou in 1151 and shortly afterwards married Eleanor of Aquitaine, whose marriage to the French king Louis VII had recently been annulled. King Stephen agreed to a peace treaty after Henry's military expedition to England in 1153, and he inherited the kingdom on Stephen's death a year later. Still quite young, he now controlled what would later be called the Angevin empire, stretching across much of western Europe.