The Romans effectively managed to combine their empire into one unit with a few methods. The first was public works such as roads and ships. Public works gave jobs to people all over, since the works were also all over. Also, it connected different parts of the empire, a road could go from one end to the other, and effectively it showed territory. Secondly, the military helped combine the empire. The military and people supporting it were working towards the same goals, conquering land and keeping their people safe. Anyone could enlist and those who did automatically became citizens. Finally, Roman peace pulled new people into the empire. People wanted to be part of an empire that was in a good place, well off. And the idea of peace was a good one after a time of heavy war. The Romans had many tactics to combine their empire into one unit, all of them created one of the most famous and influential empires in the ancient and modern world.