What are the relative merits of three trade agreements and alliances?

What are the relative merits of three trade agreements and alliances? WTO governs international trade. NAFTA is with North America. EU is Europe's trading bloc.

Trade agreements are essentially pacts between various countries that allow of trade between them. The trade is constructed and based on setting up tax, tariff and treaty agreements that allow for the participants to have investments within the trade. Two or more countries participate on the terms of their trade agreements which allows them to trade with one another.

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the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.