The tribes of the people who were the earliest inhabitants on the island of Britain about 2,000 years ago were called __1______ or ___2_____. Roman conquest on the island of Britain started from the____3_____ century and ended in the__4_____ century A.D. T he British line of kings began to rule the island of Britain from the___5____ Conquest in 1066, which was the last invasion of England by foreigners. Most densely populated area in Great Britain is ___6_____, which accommodates about 85% of the total population.