Julius Caesar had a very important role here. He insisted and tried forcing the rule of one man, himself, on all of the nation. With that he effectively wanted to create a Roman empire. He had great ambitions which were also the reason why he chose to do so any eventually march on Rome (he marched on Rome to threaten the government at the time). Interestingly, the actual republic fell to pieces and emperors started to properly govern only after the death of Julius Caesar.
Answer:
Ethnicities.
Explanation:
An ethnic group or ethnicity is a certain social category of people based on the perception of its members that they have a common origin or experience. Members of an ethnic group believe that they share a common history and cultural traditions (such as language or beliefs) that separate them from other groups. An ethnic group can proclaim a nation claiming a territory, or constitute the majority population of a nation state, whose members or citizens similarly have a certain nationality.