which of the challenges that the united states faced in this period do you feel was the most serious​

true

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.

explanation:

id do!

an early twentieth-century ad for model home blueprints