Opportunity cost refers to what you have to give up to buy what you want in terms of other goods or services. When economists use the word “cost,” we usually mean opportunity cost.
Answer:
Oil money has improved the lives of people in Southwest Asia in the last 30 years. Life expectancy has increased and the number of deaths in infants have decreased. ... One goal is to have a steady supply of oil flowing out and money flowing in.
B an investigative journalist exposing corruption
Before the gold rush the west was wild and there were very few people around. The big cities in California were shires with a few hundred citizens