The Digest was a codification of laws before Hadrian. Pax Romana means Roman Peace. Basilics was a new collection of laws at a later period (896-912 CE) under Leo, initiated by Leo’s father Basilius. Demes were the two rival parties the Blues an d the Greens. The correct answer is E, Codex Justinianus.  This immense work of codification named Codex Justinianus, later known as the Code of Justinian or, after a printed edition of 1583, appeared as the Corpus Juris Civilis. This became the basis for civil law throughout Western Europe.