A common terrorist belief is that the terrorist group can
take over a country or region.
cause a revolution to take place.
use intimidation to achieve a political objective.
freely assassinate leaders with whom they disagree.

3

Explanation:

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.