As a new faith, Islam gained strength<span>(A) within portions of the former Roman Empire.</span>
In order to maximize profits ,many businessmen in the 19th century resorted to unethical business practices and thus earned the name robber barons.
They did not physically rob people but they stole control over natural resources, paid unfairly low wages and pushed out their competition using questionable business practices .
While their practices weren't viewed as ethical, most of the 19th century robber barons didn't commit any illegal acts, though through their actions, new laws were enacted to prevent others from following their actions.
I would say d. they believed in education for all. there was no education for the puritans.
The correct answer is C) Citations.
A citation is when an author gives credit to an individual for a quote, picture, or some other type of information. Reliable sources include citations because it allows the reader to look into the sources the author used in order to create their book. If the person looks into the resources used and they are not from accredited or peer reviewed works, it will discredit the author's argument.
This is especially true in the field of history. The most reliable sources are ones that contain several citations and have been peer reviewed by other professionals within the same field.