In the wake of the Persian invasion...
In 231 Ardashir I led the Persians...
Following his Persian campaign,...
In 235 the Rhine legions killed the...
To pay for his military campaigns,...
When the Roman Senate learned that...
The usurpation of Gordian I was...
Pupienus and Balbinus ruled Rome for...
In 243 Gordian III expelled the...
In late 248 and early 249 almost...