The byzantine empire used the deadly weapon called fire to defeat their enemies.

The options of the question are, A) Napalm. B) Persian. C) Roman. D) Greek.

The correct answer is D) Greek Fire.

The Byzantine Empire used the deadly weapon called Greek Fire to defeat their enemies.

The Greek Fire weapon helped to protect the Byzantine Empire from its enemies during almost 700 years. The components of the Greek Fire were kept as a secret and throughout the years the secret has been lost. But historians refer to Greek Fire as an “incendiary weapon”, something like a bomb that produced a big explosion and spreaded the fire. With no doubt, the Byzantine Empire used the deadly weapon called Greek Fire to defeat their enemies.  

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.