New York State Learning Education Standards and Core Curriculum. Ancient Rome (500 BC-500 AD) is characterized by many different leaders, governments and events. The history of ancient Rome spans a number of centuries, and is divided into three main categories: the Roman Kingdom, the Roman Republic, and the Roman Empire. Ancient Rome is also known for many famous leaders. Caesar, Augustus, Constantine and Nero are just a few of the historic figures that led to the expansion of Rome. Read More...