How did romans choose slave to be gladiators

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.

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.