LondonLondon was an important city in Roman times, and there are substantial Roman remains, mostly below street level. By the Middle Ages, when London became the political and commercial capital of England, it was one of the most important cities in Europe.
The history of London begins about the year AD 43, when the Romans were in possession of the southern part of Britain and founded a military station on the present site of London. An insurrection of the British led by Boadicea caused it to be burned in AD 61. It was the centre of various disturbances until about 306, when Constantine constructed walls and fortifications, and thereby established stability and laid a firm basis for commercial prosperity. From 369 until 412 it was the capital of Britain, when it was known as Augusta. Subsequently it became the chief seat of the Saxons. King Alfred expelled the Danes and fortified the city. It became famous as a commercial centre at the beginning of the reign of Edward III.