Describe the characteristics of each of the following trade blocks. Be certain to explain the ways in which they are the same and the ways in which they differ. a. Economic union b. Common market c. Customs union d. Free trade area Solution a. Economic union : It is an union among different countires, where they will accept on common policies and procedures to trade among the countries. B. Common market : it is another type of trade block and it is basic of the all, in common market there would not be much rules and regulations about the import and export between countries and they will share both goods and services among the countries. c.Customs union : It is also group of countries where the member countries will agree on mutual benifit like they will not charge customs fee for mutual exchange. d. Free trade area : In free trade area type the member countries will not charge any duties/fee and the member countries can freely trade, export and import among the member countries which will give more advanced products and services. The above explained trade blocks are similiar in some and different in other means, the overall advantage of these trade blocks is all the member countries will have the option for free trade among other members and import and export will be more easily. By this means countries will earn more income at the same time the customers will also benifited on competitive advantage. Where as due to this trade blocks countries which are not member countries will not allowed to trade with the member countries which will lead to non-protection of customer rights where they will not get access to other foreign country products which are non-members..