Explain how the Persian Empire united a wide area under a single government.

Explanation:

The empire was ruled by a series of monarchs who joined its disparate tribes by constructing a complex network of roads. The unified form of the empire came in the form of a central administration around the city of Pasargadae, which was erected by Cyrus c. 550 BCEGovernment In order to maintain control of the large empire, each area had a ruler called a satrap. The satrap was like a governor of the area. He enforced the king's laws and taxes. There were around 20 to 30 satraps in the empire. The empire was connected by many roads and a postal system.. The Persian Empire. It was one of the first truly international empires in the world. It was a dominant cultural and economic center. It was one of the first governments in the world

i think it's a)sparta

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.