The Egyptian empire is interesting. But my ALL time favorite has got to be the Romans empire. Their ingenuity was amazing. They started the modern democratic governance- senate, mayors, etc etc---Their aquatics or water plumbing methods were amazing. Basically, I like their civilization knack-- the turks--and the Egyptians were the early civilization, yet--they never went far, hence the Romans being originals--set models for modern governance. The romans also took a lot f inventions from the turks, like better ship building and engineering--the problem with muslim ancient nation is the same problem with the modern muslim world; education, and progressive agendas is not in their radar. They live in tents and drink coffee for many centuries. Education and progress to them is something bizarre and hard work.
The British Empire is also -good- but the only use they brought was civilization to primitive Africans, but unfortunately, they also brought their class system and prejudices that they practiced in their land of aristocracy!
