In May 193 Septimius Severus invaded...
Having established himself as...
By 207 Septimius Severus felt the...
To pay for his military campaigns,...
When the Roman Senate learned that...
The usurpation of Gordian I was...
In late 248 and early 249 almost...
Decius had not been emperor for a...
By the 250s the Roman Empire was in...