Was heißt »Römisches Reich« auf Englisch?

Das Substantiv »Römisches Reich« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Antonyme

Early Christians were persecuted by the Roman Empire.
The Battle of the Teutoburg Forest, where an alliance of Germanic tribes defeated 3 Roman legions in 9 A.D., was one of the Roman Empire's most humiliating defeats.
An important reason for the fall of the Roman Empire was that they had no zero. So they had no way of demonstrating a successful exit of their C programs.
What led to the fall of the Roman Empire?
He was the last Arch Seneschal of the Holy Roman Empire.
The Roman Empire survived for a thousand years.
The Holy Roman Empire ceased to exist in 1806.
The expansion of the Roman Empire wiped out a considerable number of the original European languages.
The Holy Roman Empire came to an end in the year 1806.
Although 475AD is the year that shows the 'decline' of the Roman Empire, it is not the year of its 'fall'.