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 Tumlong of the World. At the same time, he ensured that no other community would be able to purchase lands from the Bhutias and the indigenous Lepchas to protect feudal integrity. China recognised Sikkim as a British protectorate in 1890 and the Chogyal's role in the administration of his country disappeared. Treaty of Tumlong The Treaty of Tumlong was a March 1861 treaty between Great Britain and the Kingdom of Sikkim in present-day north India. Signed by Sir Ashley Eden on behalf of the British and Sikkimese Chogyal, Sidkeong Namgyal, the treaty secured protection for travellers to Sikkim and guaranteed free