Which technological advancement unify the roman empire

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

Which gold led israelis and palestinians into conflict

Central american countries are important agricultural producers. each year, the united states imports about five billion dollars’ worth of a. bananas b. cacao c. mangoes d. coffee