In AD 43 the emperor Claudius ordered an army of 40,000 to invade Britain. In AD 410 the emperor Honorius informed the population of Britain that they now had to defend themselves; there was no longer any Roman army to protect them, nor a Roman authority to administer the country. The four centuries during which the Roman presence in Britain rose, flourished, and then declined changed every aspect of life. Industry, trade, government, the arts and learning--even the physical appearance of the country--were all revolutionized, and the effects are still apparent nearly 2000 years later. This revised and updated edition of Roman Britain outlines with clarity and authority this critical period of history, and illustrates it fully with pictures of the surviving objects of the period, largely from the incomparable collections of the British Museum.