Research on trade liberalization frequently overlooks the effects on third-party welfare. This paper studies a historically tragic third-party consequence of a special case of tariff reform: the British Sugar Act of 1846. Using a new database of monthly observations of prices and import volumes for the period 1840–1853, I estimate the price and welfare effects of the passage of the Sugar Act for consumers and colonial and noncolonial producers. Considerable consumption gains for British consumers and a reduced deadweight loss were derived from the intensification of trade with the slave economies.

中文翻译：

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1846 年《英国糖业法案》的价格和福利影响


关于贸易自由化的研究经常忽视对第三方福利的影响。本文研究了关税改革的一个特殊案例——1846 年的《英国糖业法案》——历史上悲剧性的第三方后果。使用 1840 年至 1853 年期间每月价格和进口量观察的新数据库，我估计了《糖业法案》通过对消费者以及殖民地和非殖民地生产者的价格和福利影响。与奴隶经济的贸易加剧为英国消费者带来了可观的消费收益和减少的自重损失。