Firms in a perfectly competitive industry sell homogeneous products and are price takers.
Miller, Roger LeRoy & Fishe, Raymond P. H. Microeconomics: Price Theory in Practice (1995)
Consumers' surplus in the perfectly competitive industry equals areas.
Miller, Roger LeRoy & Fishe, Raymond P. H. Microeconomics: Price Theory in Practice (1995)
The tariff can then be removed, leaving behind a viable and competitive industry.
Pass, Christopher, Lowes, Bryan Collins Dictionary of Economics (1993)