What is a correct assumption historians make when they evaluate a source of information? they know an eyewitness report will be free of bias. they know an eyewitness report will always be accurate. they know an expert will provide the most accurate information. they know a student who did research will be the most accurate source.

When historians evaluate the source of information, they know that the experts give the most accurate information about the event or the historical process. Eyewitness reports can be accurate, but not always, because they can be partially accurate or biased, they can also be false, which is not a reliable source for historians. Student researches can also sometimes be a reliable source, but when it comes to historical theses and constructions to be presented, it is best to rely on the experts.

The answer is: C.

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.