Question

After he killed his predecessor, Didius, he took control, but a civil war broke out with a number of generals and their legions bidding to become emperor. After the civil war he expanded the empire to the Tigris in the east, and he re-strenghtend Hadrian's Wall. He died in England in 211 A.D..

Answer 1

Septimius Severus became Emperor after Didius Julianus's assassination, expanded the empire, reinforced Hadrian's Wall, and died in England in 211 A.D.

Step-by-step explanation:

The individual in question who took control after killing Didius seems to be the Roman Emperor Septimius Severus. After Didius Julianus was assassinated, Severus claimed the throne amidst a chaotic civil war involving several generals.

Severus then expanded the empire's territory to the Tigris River in the east and reinforced Hadrian's Wall, which was initially constructed under Emperor Hadrian to mark the northern limit of Roman Britain. The wall aimed to prevent incursions from the north and stands as a significant monument of Roman Britain. Septimius Severus died in 211 A.D. while in England.