What is the author inferring by comparing Barbarians pouring in upon the habitations of peaceful commerce as vultures descending upon domestic fowl?

Barbarians were not really given the credit they deserved as they were able to cull out a living by pillaging.
Universally, good triumphs over evil given opportunity and condition for countermeasures.
Like the domestic fowl, civilized cultures lost their necessity for defense among themselves, and as a result, lost the skill to defend against intruders.
While fowl are all the same like humans, there are some good, and some bad.
Like the domestic fowl, only minimal skills at survival were needed as they are fed from their owners like citizens were fed by their government.

What is meant by the word “rapine” as used in this context?

Plundering
Exculpating
Accosting
Rampaging
Acquiescing

What is meant by the word “timorous” as used in this context? A. B. C. D. E.

Fearful
Cultured
Civilized
Harmonious
Revered

What is meant by the word “celerity” as used in this context?

Efficiency
Agility
Prowess
Speed
Thoroughness