Super easy question me i will mark you !

choose the empire united by a common religion and a common language. this empire faced a threat from an internal faction called the yellow turbans.

Chinese Empire, Han Dynasty

Explanation:

The Rebellion of the Yellow Turbans was a peasant revolt that broke out in 184 AD in China in the time of Emperor Ling of the Han Dynasty. It took its name from the yellow kerchiefs that the rebels wore on their heads. It is an important point in the history of Taoism for the association of the rebels with secret Taoist societies. The revolt is also the starting point of the historical novel Romance of the Three Kingdoms by Luo Guanzhong.

Holy Roman Empire, Christianity, Latin.

I hope this helps.

c. troops marched forward in close formation against newer, more accurate weapons

i actually have a suggestion instead of an answer, how about next time instead of spending the time to time up the question you take that time and try to figure something out for yourself, do you understand?

explanation:

leave a 5 star and a and brainliest answer if you understand, hope this betters you day, or not i don't really care either way. xd