1. Why do rent ceilings lead to shortages and black markets?2. Some people assert that protection from foreign competition prevents rich countries from exploiting developing countries. What is this...

1. Why do rent ceilings lead to shortages and black markets?2. Some people assert that protection from foreign competition prevents rich countries from exploiting developing countries. What is this argument in more detail and what is its flaw?3) What are diseconomies of scale and why might they occur?