Christianity was present in Roman Britain from at least the third century until the end of the Roman imperial administration in the early fifth century. Religion in Roman Britain was generally polytheistic, involving multiple gods and goddesses; in being monotheistic, or believing in only one deity, Christianity was different. Christianity was one of several religions introduced to Britain from the eastern part of the empire, others being those dedicated to certain deities, such as Cybele, Isis, and Mithras.