Final answer:
Justinian's importance is demonstrated by his significant contributions in religion and law, specifically through his enactment of laws addressing religious matters, funding of church construction, publication of theological discourses, and codification of Roman law.
Step-by-step explanation:
Justinian's importance is demonstrated by his significant contributions in both religion and law.
Religiously, Justinian expressed his piety by enacting laws that specifically addressed religious matters, funding the construction of several churches, and publishing theological discourses. His devotion to Christianity and eagerness to impose Christian uniformity showcased his importance in shaping the religious landscape of the Eastern Roman Empire.
Legally, Justinian's most notable achievement was his codification of Roman law in the Corpus Juris Civilis. This project established a cohesive and centralized legal system, which served as the basis for many legal systems in Europe. By enforcing Roman law and eliminating competing legal systems, Justinian demonstrated his impact and influence in matters of law.