Rationing devices that our society uses include: a) only the invisible hand and social forces
b) only the invisible hand and political forces
c) only the invisible hand, social forces and political forces

answer; when one group has an extremely high score at pretest;

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.

answer; sociological imagination;

answer; 35 year old african american man who is also a college graduate;