Why did justinian i fail to regain all of the former provinces of the old roman empire ?
a) his general made military blunders.
b) his troops mutinied.
c) his army and finances were weakend by plague.
d) he didnt equip his troops well.

Correct answer choice is :

Justinian I, traditionally identified as Justinian the Great and also Saint Justinian the Great in the Eastern Orthodox Church, was the Eastern Roman monarch from 527 to 565. During his reign, Justinian attempted to strengthen the Empire's greatness and reconquer the lost western half of the historical Roman Empire.