Final answer:
Justinian partially achieved his goals; he won military victories and reformed legal codes, but could not maintain his conquests after his death.
Step-by-step explanation:
Emperor Justinian's goal included the reconquest of the Western Roman Empire and imposing Christian unity and Roman law across his empire. While Justinian indeed achieved military victories such as the capture of Carthage, the occupation of Rome, and advances in Italy, including the cities of Milan and Ravenna, the successes were temporary as the Byzantine Empire failed to maintain its hold over these territories after Justinian's death. The empire faced enormous financial strain due to ongoing conflicts, particularly against the Persians, leading to concessions like paying tributes for peace. Moreover, Justinian's legal reforms, including the codification of Roman law into the Corpus Juris Civilis, had a lasting impact on European legal systems.
Based on the information provided, it's apparent that Justinian achieved success during his reign but struggled to ensure the long-term stability of his conquests and his other political ambitions. While Justinian accomplished some of his goals, such as military victories and legal reforms, his larger objective of permanently reclaiming lost territories was not achieved in the long term due to subsequent invasions and pressures.