Why might Justinian be considered a failure emperor?

The ecclesiastical war which he waged against the Monophysitism of his subjects in the Oriental provinces was as unsuccessful as his military warfare against the barbarians, since it utterly failed of its intended effect of making the Catholic Church oecumenical once more in fact as well as in name

Explanation:

a.) d-day invasion of normandy.

hope this !

the option which was not a function of missionaries in the northwest was the first one - they established posts for trading furs and other goods.

missionaries were sent around the world to spread religion and their knowledge and others - they were not merchants who sold furs and other goods.