In the law of contracts, this doctrine provides that if a party changes his or her position substantially from acting in reliance upon a promise, then that party can enforce the promise although the essential elements of a contract are not present

Which of the following best explains how trade enables greater specialization among producers? a. trade diversifies the market by bringing specialized goods from around the world. b. trade requires distribution networks and adds one more step to the production process. c. trade enables producers to open up new markets for their goods and services. d. trade allows people to focus on one kind of production and trade for their other needs.