Answer:
1.345 years
2.The Roman Republic was installed after the Roman kingdom was overthrown in 509BC and lasted until 27BC. One of the most important figures of this period is Julius Caesar. A number of important events took place at the end of the Roman Kingdom and beginning of the Roman Republic.
3.1000 years
The Roman Empire was one of the greatest and most influential civilisations in the world and lasted for over a 1000 years. The extent and length of their reign has made it hard to trace their rise to power and their fall.
4.1000 years
The Roman Empire was one of the greatest and most influential civilisations in the world and lasted for over a 1000 years. The extent and length of their reign has made it hard to trace their rise to power and their fall.
Step-by-step explanation: