Final answer:
The emperor born in Africa who reigned from 193-211 was Septimius Severus, known for his links to Marcus Aurelius and being the forebearer of the Severan Dynasty which experienced increasing threats until the Crisis of the Third Century.
Step-by-step explanation:
The emperor who was born in the African province and reigned from 193-211 is Septimius Severus. He was a Roman citizen of both Italian and North African origin. Septimius Severus ascended to power after the assassination of Commodus and was known for declaring himself the secret son of Marcus Aurelius and for having his portrait styled similarly to the former emperor. Severus was pivotal in continuing the Severan dynasty, which saw several emperors including Caracalla, Macrinus, and Elagabalus until the eventual reign of Severus Alexander who ruled until 235 CE. It was after Severus Alexander's death that the empire entered the Crisis of the Third Century, a period of instability and short-lived emperors.