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
Campaign to Suppress Bandits in Northwestern China the Japanese-occupied regions of China, and unwilling to let these regions falling into communist hands, the nationalist government ordered the Japanese and their turncoat Chinese puppet government not to surrender to the communists and allowed them to keep their fighting capabilities to "maintain order" in the Japanese occupied regions by fighting off the communists. This earlier miscalculation resulted in further alienation and resentment to the nationalist government by the local population, which had already blamed the nationalists for losing the regions to the Japanese invaders during the war. Half a decade later when the nationalists were driven from mainland China,