Current location - Plastic Surgery and Aesthetics Network - Wedding supplies - Describe the differences and connections between the four historical concepts of "Roman city-state, Roman Republic, Roman Empire and Holy Roman Empire" in concise language.
Describe the differences and connections between the four historical concepts of "Roman city-state, Roman Republic, Roman Empire and Holy Roman Empire" in concise language.
Roman city-state: Built by the descendants of Trojans, it has no influence in the Mediterranean region.

Rome * * * and country: nobility * * and system, and Rome began to expand during this period.

Roman Empire: Established after Caesar's nephew Octavian staged a coup to end the last three-headed rule.

Holy Roman Empire: An alliance of Germanic countries that is neither holy nor Roman.