Which dynasty reunited China after it collapsed for 350 years

An economic system where all or most businesses are owned by government

Gettysburg address question. what is the purpose of this address?

What does it mean to say that "service sector" jobs are predominant in europe's mixed economies today? a. that jobs where people work in factories predominate b. that jobs where people do something for others predominate c. that jobs where people work the land predominate d. that jobs in government predominate