Any two may be chosen, as long as the reason is clear. The two strongest choices are the Himalayas and the Northern Plains with their rivers.
1. The Himalayas — important because:
- They act as a natural barrier in the north, blocking the freezing winds of Central Asia and giving northern India a far milder winter than other places at the same latitude.
- They stop the monsoon winds and force them to drop their rain over India.
- Their snow and glaciers feed the Ganga, Indus and Brahmaputra all year — which is why they are called the ‘Water Tower of Asia’.
- They are a home of biodiversity and of pilgrimage, prayer and meditation.
2. The Northern (Gangetic) Plains — important because:
- Their rivers bring down minerals that make the soil extremely fertile, so they feed a very large part of the country.
- Their flatness allowed a dense network of roads and railways, and the rivers themselves carried travel and trade for millennia.
- A very large proportion of India's population lives here, and much of India's history was made here.