In 800, Charlemagne accepted the Pope's offer to be crowned Holy Roman Emperor. This act had the practical effect of A. establishing Christianity as the religion of Europe.
B. declaring that Rome was holier than any other city.
C. recognizing Charlemagne as the true head of the Catholic Church.
D. proving that the Pope was as powerful as the Byzantine emperor

Mankiw attributes – chapter 1 and his 10 principles – differences in living standards within a countryover time and across countries at a moment in time to: a. the presence or absence of inflation and unemployment. b. the allocation of resources between private markets and the public sector. c. those that have dealt successfully with the efficiency v. equality tradeoff and those that haven’t. d. differences in productivity. e. ones that think at the margin and respond to incentives and those that don’t.