The power to raise or lower the tax rate is part of

Food, water, and shelter will not attract insects and rodents if recyclables are stored in

Rats that received electric shocks were unlikely to develop ulcers if the

In north korea, a farmer’s income is the same as a dentist’s income. in a country with a mixed or market economy, the difference between those two professions might be more than 5 times different. how can you explain the fact that individuals doing the same work in different countries do not earn comparable salaries?