#1 Â Â Â Â Â A pattern that was common among the ancient civilizations of China, Rome, Greece, Mesopotamia, Egypt, and India was that most of them started as a dictatorship, a monarchy, or a dynasty. Eventually, most of them changed to a democracy, republic, or to class systems. Almost all of the civilizations had one or two great leaders. For example, Egypt had King Tut, Greece had Alexander the Great and Rome had Julius Caesar. Â Â Â Â Â China has had many different leaders through the years. Dynasties, or a series of rulers from the same decent, ruled this government. Some of the most powerful dynasties were the Shang, Zhou, and Qin. These dynasties and many others ruled from the times of 1500 BC to 1900 AD. The dynasty that lasted the longest was the Zhou Dynasty. It lasted from 1122 BC through 256 BC. The Qin Dynasty had one of the strongest central governments, but only lasted fourteen years. The most peaceful time was when the Han Dynasty ruled. Â Â Â Â Â Another ancient civilization was the Romans. They started out as a monarchy government by having one ruler.