At Its Height, the Roman Empire Completed the Hellenistic Trend

At its height, the Roman Empire completed the Hellenistic trend towards cosmopolitanism and universalism by

A) constructing a world community that broke down nations.
B) developing a rational system of law that applied to all people.
C) its expansive conception of citizenship.
D) extending stability and order from Britain to Arabia and from the Sahara to the Danube.
E) all of the above