Timeline of Stonehenge By Alice11 4000 BCE A group of Neolithic immigrants arrived from Europe 2500 BCE The population began to divide into tribes 2000 BCE The Celt started settling across much of Britain and Ireland 1300 BCE A new people entered the story of the western world 55 BCE Julius Caesar's arrival in Britain 410 The departure of the Romans left the island undefended against the invasions of the Angeles and Saxons from northern Germany Period: 900 to 500 BCE The Celts crossed the narrow English Channel and settled in peace in many parts of Britain 1066 The Saxon king Edward the Confessor died 1215 The signing of the Magna Carta feudalism began its slow decline Period: 1300 to 1400 England experienced the terrible Black Death Period: 1337 to 1453 Hundred Years' War with France Period: 1455 to 1485 Wars of the Roses 1485 The final battle at Bosworth 1558 Elizabeth I ascended the throne 1603 Elizabeth reigned unitil