The correct order of these incidents/policy implementations related to development in India and its neighbor is as follows:

1. D. The great leap forward campaign - The Great Leap Forward took place in China from 1958 to 1962.
2. C. Great proletarian cultural revolution - The Cultural Revolution followed the Great Leap Forward and occurred from 1966 to 1976 in China.
3. B. One child policy introduced in China - China's one-child policy was implemented in 1979.
4. A. Reforms in Pakistan - Reforms in Pakistan, referring to economic liberalization, started in the early 1988

5. E. Reforms in India - Economic reforms in India started in the 1990s, particularly in 1991.

So, the correct order is 4. D, 2. C, 3. B, 4. A, 5. E.