They were surrounded by mostly mountains so not many countries were able to communicate with them
It was the constitution because they wanted to establish a better government.
Based on the order of occurrence, the government used by rome during its history is :
1. Monarchy ( 753 - 509 BC)
2. Republic (509 - 27 BC)
3. Oligarchy (27 BC - 476 AD)
4. Dictatorship
hope this helps
