An example that shows how Romans gave away citizenship rights in measured amounts can be seen when we look at the difference between the <em>Latini</em> and the <em>Foederati</em>.
The <em>Latini</em> were people who were born outside of Rome but on the Italian peninsula. Their citizenship allowed them to do business with Rome, and travel and live within the Empire. However, they were not allowed to have a Roman marriage. The <em>Foederati</em>, on the other hand, were the citizens of states that had obligations towards Rome. They were given limited citizenship rights in exchange for military service.
The Latini were people who were born outside of Rome but on the Italian peninsula. Their citizenship allowed them to do business with Rome, and travel and live within the Empire. However, they were not allowed to have a Roman marriage. The Federation, on the other hand, were the citizens of states that had obligations towards Rome. They were given limited citizenship rights in exchange for military service.
The correct answer is criminology. Criminology is a branch of sociology, meaning that it deals with humans and societies in general, but particularly regarding crime. It studies why crime actually happens and what could be done to avoid it, as well as what should be done with offenders.