The answer should be industrialized nations.
Thank you to USA.
The correct answer here is the option B.
The March on Washington occurred August in the year 1963. The purpose of this action was to gather support for the passing of the Civil Rights act. About 250.000 people were a part of the march and it was during this ceremony that Martin Luther King Jr. delivered his famous I Have a Dream speech .
In the 1970s, OPEC demonstrated that "<span>b. An alliance in control of a valuable resource could exert control over the global economy," since they restricted the production of oil in order increase prices. </span>