China–India relations major economies in the world. Growth in diplomatic and economic influence has increased the significance of their bilateral relationship. Cultural and economic relations between China and India date back to ancient times. The Silk Road not only served as a major trade route between India and China, but is also credited for facilitating the spread of Buddhism from India to East Asia. During the 19th century, China's growing opium trade with the East India Company triggered the First and Second Opium Wars. During World War II, India and China both played a crucial role in halting the progress of Imperial
Western imperialism in Asia China vulnerable to Western, Meiji period Japanese, and Russian imperialism. In 1839, China found itself fighting the First Opium War with Britain. China was defeated, and in 1842, signed the provisions of the Treaty of Nanjing which were first of the unequal treaties signed during the Qing Dynasty. Hong Kong Island was ceded to Britain, and certain ports, including Shanghai and Guangzhou, were opened to British trade and residence. In 1856, the Second Opium War broke out. The Chinese were again defeated, and now forced to the terms of the 1858 Treaty of Tientsin. The treaty opened new ports to