Bell Ringer. How did the Roman Empire Fall? Who were the Huns? Where is Persia?. Overview from 500-1500 C.E. Classical Empires Fall. The nature of History is that things change. In early history there were the great empire of the Han Dynasty, Rome, and India (Gupta).
As more farmers moved to the cities there were not enough jobs, disease became a problem, and the price of food rose. Taxes cause inflation, and civil unrest.
Rome will face pressure from Germanic tribes from the north. They will succeed in sacking Rome three times 410, 455, and removing the last emperor in 476.
In China no new dynasty will immediately emerge, but about 300-400 years later the Tang and Song dynasties will take over.
Abu Bakr, Umar, Uthman, and Ali will be the first four Caliphs (632-661)
Despite the differences of its followers Muslims will for a massive empire by 900, known as Dar al-Islam (the House of Islam)
The Muslim empire will thrive on trade as it helped connect major trade roads.
Muslims will make advancements in mathematics. They apply algebra to astronomy, and are responsible for the modern number system (including zero from India)
The Empire would grow large, and be divided into four. The Four sections would continue to work with one another.