Why did Justinian's reconquest of the western Roman Empire fail?

Question

Quizplus · Accepted Answer

The costs associated with conquering and defending the vast western empire were too great. Justinian's reconquest of the western Roman Empire was expensive in terms of both money and manpower. The Byzantine Empire was already under strain from ongoing wars on multiple fronts, and the costs associated with conquering and defending the western territories were simply too great to sustain. The Byzantine Empire was ultimately forced to withdraw from much of the territory it had gained in the west, abandoning many of its holdings and leaving them vulnerable to invasion by other powers.

Why Did Justinian's Reconquest of the Western Roman Empire Fail