Yes, the Romans had many myths about their origins. One of the most famous is the myth of Romulus and Remus.
In the city of Alba Longa, the king had a daughter named Rhea Silvia. The king's brother usurped the kingdom and imprisoned Rhea Silvia to prevent unwanted heirs. However, Rhea Silvia was impregnated by Mars and two twins were born, Romulus and Remus. The babies put in a basket and sent down the Tiber River. Their cries were heard by a wolf who had recently lost her cubs. She suckled the babies and they survived. The babies were found by a shepherd named Fastula and raised by him.
When the twins had grown, they discovered their true origins and returned to Alba Longa and restored their grandfather to his thrown. Then they went on to found their own city, Rome (named after Romulus).
With 1 consul, they can make themselves dictators and Rome did not want that to happen. With 3, two could side against one and it could get unbalanced. With 2, one can veto the other and stop them from doing bad, hopefully balancing each other's weaknesses.
They were suspected of planning revolution - meeting in private houses, and reportedly eating human flesh and blood - sacrileges were often a sign of revolutionaries binding themselves with criminal actions so that none of them could break the plot without bringing the death penalty on themselves as well as the others.
The early Romans were idolaters. It was a custom that not only did Romans initiate their own gods but as they began to conquer the known world, they did what most such nations then and before them did. If the conquered peoples had something worthwhile in their god line, the conquering nation would either adopt a similar god or some of the attributes of a particular deity they liked. Romans also deified their emperors, making idols and temples to them as they did their other deities. They had male and female deities and as was the practice their gods had specialties, governing with particular powers and crafts. Having a number of deities, as did many nations, is called the pantheon of gods. In fact the Greeks were so superstitious they had an altar to the unknown god, just in case they did not know about one and so, to not anger it by making it feel slighted. This is a very big subject. There are books in your library that specify these things.
Because Carthage was its one remaining big competitor for power over the Western Mediterranen at the time. It was richer than Rome and controlled large areas in North Africa, Spain, southern France and Sicily. It took three wars because the Romans were out to completely destroy Carthage as a nation and as a competitor.
They followed the successful example of their predecessors - Assyria and Babylon. By appointing provincial governors, they had a supervisory control to ensure that local government was run properly, and by having local government, the peoples were able to continue their traditional ways. And of course, it saved having massive bureaucracies which so plague the modern world, eg the European Union.
It tells us that the Romans fancied having Trojan origins
The Romans did not have three branches of government. This is a modern concept.
The Romans formed a republic in order to allow them to rule themselves and not have to take orders from one individual. In their method of self rule, the Romans restricted the length of time a man held political office and also restricted the length of time he had to wait before he could serve again.
For having a poo on the loo
by having a powerful army
The Romans were okay with the Jewish nation, but as for Christians, they killed as many as they could, by way of having a lion eat them in a Roman Colosseum, or by having them hanged or burned at the stake, etc.
Tigers entertain themselves by having backdoor with eachother.
I believe that since Adam was the first human on the planet, that his name would be the first Christian name. It means "of the earth" in Hebrew. Now as far as Christian as in the meaning having Christian origins. "Having Christian origins", I am not sure.
Romans 8:6
North, South, and Central America
Castles usually defended themselves by having a wall with a moat or ontop of a hill
People can see themselves in 5 years being married. They may also envision themselves having kids or having a great job.