The historical development of English is 800 words.

Early tribal immigrants of Germanic peoples.

In the early days, four Germanic tribes (Angles, Saxons, Jutes and Frisians) immigrated to England, and English was passed down from their language changes. According to the Anglo-Saxon Chronicle, around 449 AD, Vilti, the king of the British Isles, invited his "Anglo relatives" to help him fight against the Picts, so he returned the territory of Southeast Angles. Later, he sought further support, and Saxons, Angles and Jutes came one after another. Chronicles record that these "immigrants" eventually established seven kingdoms: Northumbria, Mercia, East Anglia, Kent, Essex, Sussex and Wessex. (abbreviation: "Seven Kingdoms Era")

After the Germanic invasion, they ruled the local Celts. Native languages mainly exist in Scotland, Wales, Kangwa and Ireland. The language of these invaders gradually formed "Old English" (Anglo-Saxon), which is very similar to ancient Frisian. English, England and East Anglia are three words developed from the vocabulary describing the Angles: English, Angelcynn and English Alan.

The Celts lived on an island called "Britannia" by their ancestors. After the Germanic invasion, the Germans occupied and ruled the kingdom of England in the southeast of the British Isles. Some Celts were wiped out and assimilated, while others were forced to move westward, thus forming the famous Celtic Kingdom period in British history. King Arthur, who led the Celts to bravely resist the Saxon attack, was their representative. Therefore, Celtic mainly exists in Ireland, Wales, Cornwall in Scotland and Brittany in France. Until the13rd century, the Kingdom of England finally formed a United Kingdom-style alliance with other Celtic-speaking kingdoms, and the United Kingdom-style alliance composed of these Celts and Germans was the embryonic form of the United Kingdom of Great Britain and Northern Ireland.