Commercial treaty till the middle of the century, apparently with irresistible support, they suddenly collapsed under the strain of a season of exceptionally short crops. Both their continued maintenance and their final sudden abolition are in some respects divergent from the general course of British tariff history. Commercial treaty A commercial treaty is a formal agreement between states for the purpose of establishing mutual rights and regulating conditions of trade. It is a bilateral act whereby definite arrangements are entered into by each contracting party towards the other—not mere concessions. For example, the Methuen Treaty was a commercial treaty between Portugal and
Treaty of Whampoa Treaty of Whampoa The Treaty of Whampoa () was a commercial treaty between France and China, which was signed by Théodore de Lagrené and Qiying on October 24, 1844 aboard the warship "L’Archimède". It is considered an unequal treaty by many sources. Based on the terms of the accord, China granted the same privileges to the Kingdom of France as it had done to Britain in the Treaty of Nanking and subsequent treaties. These privileges included the opening of five harbors to French merchants, extraterritorial privileges French citizens in China, a fixed tariff on Sino-French trade and the right of