What is one reason that the middle ages are sometimes referred to as the dark ages?
a-for the fertile soil that supported agriculture
b-for the persecution suffered by certain christian group, as well as jews and muslims
c-for the political disorder that resulted from wave of invasions
d-for the heretical challenges level against the roman catholic church

The arrival of the Dark Ages in Europe followed the fall of the Greek and Roman empires in approximately 500 A.D. Several theorists propose that the term "Dark Ages" described the difference in intellect and cultural advancement between European citizens and people living in ancient Greece and Rome. In contrast to Greece and Rome, European populations lacked advancement in several key academic disciplines, including science and mathematics.

Other popular theories, however, suggest that the name Dark Ages derived from the arrival of destructive maladies in Europe in the form of famine and disease. Of the illnesses that struck Europe, the bubonic plague was most destructive. The plague sickened and killed millions of Europeans. Those not killed by disease constantly faced the threat of death from battles and warfare, which covered the continent. The Dark Ages concluded around 1500 A.D., marking the end of a backwards time in human history.

what are the choices btw if it was me id say the lack of money to continue with education

it proved indian land claims were unjustified.