Chapter four on the Eurasian Empires

This was a very interesting chapter. It was a little confusing with all the comparison and differences of empires. I found it interesting that Persia attacked Greece twice in  short period of time and was defeated twice by Greece. The Roman Empire instilled Christianity into a world wide religion through out its empire. The Roman Catholic church was later introduced. It was interesting to  read about religion, in the concept that I am taking a religion class and it's nice to have subjects come together. The Persian Empire centered kingship through out monarchs. Which ties in with Alexander the Great's death and how his empire split into three kingdoms  ruled by the leading Macedonian generals. There were similarities and differences between empires. China brought communism. They had a different approach to civilization. China saw Western Europe, Roman era as a failure. They didn't understand how it was difficult to reconstruct the unity of their classical empire. The empires were ruled differently and China thought communism was better. I had no idea India was briefly ruled by the persian empire which was later conquered by Alexander the Great. The Eurasian empires may have been different, but in one way or another they dealt with each other. There was so much information and differences in the chapter, that it makes me nervous when it comes to exactly what it is i need to know about the chapter if not everything.