Before the development of writing what technique was used to preserve stories about the past

Is there such a thing as a social structure that constrains individual action, or is society nothing more than a figment of our imaginations?

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.

Astudent receives a pell grant based on the_.a.satb.nasac.fafsad.act