Which of the following explains the principle, Incentives Matter? 1. People are forced to make choices because of limited resources.

2.Our actions have consequences for the future.

3. People respond to incentives

4. Specializing and then trading makes people better off

Read the opening line from a draft of an informative essay. which is the best revision of the sentence? trade between great britain and japan expanded as opium deals between the nations increased in the early 1800s. britain greatly expanded trade with china, increasing its opium exports more than five times in the early 1800s. britain’s expanded trade in opium led to export increases that were five times greater in the early 1800s. britain greatly expanded trade with china, which increased its opium exports more than five times in the early 1800s.

What would lead a historian to consider two events to have a relationship of correlation rather than causation?

After world war 1 immigration was based on