Answer:
1) The Indo-Gangetic Plain is one of the most fertile farming regions in the world. The Indo-Gangetic Plain is also the most heavily populated part of South Asia. In fact, the area contains about three-fifths of India's population.
The Indo-Gangetic Plains of India consists largely of alluvial deposits which are brought down by the rivers originating from the Himalayas and the peninsular region. The alluvial soil is fertile in nature. The rich deposits of this soil make this area suitable for agriculture.
2) From the late 1960s the Green Revolution transformed agricultural production, food security and livelihoods in South and Southeast Asia. The outcomes of this transformation are still being felt throughout the region.
3) South Asia is the seat of many of the world's great religious traditions, most notably Buddhism, Hinduism, jainism and Islam. Buddhism was established in the fifth century B.C.E
