Period A is known as what?
Prehistory
Post history
History

i am sure the answer is d

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.

i believe he should not do investment b

because dead babies can't fart