It was originally a republic with its senators being wealthy members of society, with lower roles being more open to the public. They would elect to people to be head of state, but they were equal to each other. In times of crisis a dictator would be put in power, and they would make a decisions. They were expected to give up the role once the crisis passed. The only person to not give up the position became the first emperor of Rome
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It is easier to travel because you only need a driver's liscense to travel domestically, but you need a passport to travel internationally. Also, the security lines are shorter if you travel domestically.
The state goverment is lower when comes to courts than the national gov.
Goods became cheaper and easier for businesses to produce.