Megamarket.

Considers the conflicting visions of the North American Free Trade Agreement, which when approved, will mark a dramatic turn in the history of the continent: it will formalize a grand economic alliance and reshape the way North American business is done. Rolling back as many as 20,000 separate tariffs over the next 10 to 15 years; Steps to diminish nontariff barriers, such as dairy and cotton quotas; Labor leaders fear pain; Effect on global economy.