Anglo Saxon Conquest AS tribes came fron Northern Germany, first invaders were the dutes who arrived Kent 449. Not longer,bands of S stablished themselves in the South. The Angles occupied East Anglia and Northumbria. Between their arrival and the 7th century, they occupied the whole of England, pushing the Celtic tribes to the margins. Therefore, the tribes were pushed to the boarders. It caused the creation of seven kingdoms: The AS HEPTARCHY (Northumbria, Mercia, Wessex, East Anglia, Essex, Kent, Sussex) It supossed the beginning of Britain as a country and the English language. They each stablished their own kingdoms and were always fighting for power and some didn´t last. Btw 450-1066 (Norman invansion). Although sometimes they joined to fight a common enemy like the Vikings but this was rare. The most imx kingdom was Northumbia, Mercia and Wessex.