What is one of the major purposes of the world trade organization?
a. to countries establish trade barriers
b. to encourage free trade among countries
c. to promote understanding of other cultures
d. to provide nations with a place to display their new products

One of the major purposes of the World Trade Organization is to encourage free trade among countries.

Explanation:

The World Trade Organization is the only international organization that deals with global standards that regulate trade. Its main function is to ensure that commercial flows circulate as smoothly, predictably and freely as possible.

Also it can :

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

the octopus by frank norris