A History books tell us that the city of Rome was set up in 152 B. C. It's a fact,however,that by 100 A. D., Rome was the centre of a big empire. It was from Syria in the east to Spain in the west,from Britain in the north to Africa in the south. All or part of 27 of today's countries were included in the Roman Empire. All of their people were ruled by one government,that of Rome. All educated people spoke the same language,Latin. And one of the empire's outposts（前哨） was called Londinium. This unimportant town would later become London,England,and the, centre of another empire.