Four new provinces were created for which London was declared the capital of one of them. The Emperor also declared London the financial center and seat of the treasury of Great Britain. After this, the emperor was killed and the new emperor besieged and plundered London. Meanwhile, the deceased emperor's general arrived and saved the city from the new emperor and reunited Britain with Rome. At the end of this era, the emperor handed over his responsibilities to the British province, and then the defense and all other heads were administered by the British province. Thus, this period saw many rises and falls of London and can be considered an important period because in the end it was able to mark the development and formation of London as an important city in the historical period. The Dark Ages (5th century) Not much is known about this age. Although the highlight of this era was that the locals used Roman coins, from the previous century they imported large quantities of amphora jars which were exported from the eastern Mediterranean. This trade with another Empire emphasizes the recovery of London as a center of trade. But the situation at that time in the world was such that in exchange for exports, slaves were received. The town was named "Caer-Lundien", which is the Celtic name for the late