Which describes the reason for hardship in the Muslim world during the time of the European Middle Ages

Muslim nobles subjected most Muslims to a miserable, difficult life of serfdom. Christians from the Byzantine Empire continually tried to convert Muslims to Christianity.

Explanation:

my cultural heritage consists of irish, german, native american, and others.

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.