The features that the Indian subcontinent share are
1. A monsoon type climate with a short rainy season and long dry season.
2. Very hot summers and generally warm temperature throughout the year.
3. Languages that belong to the Indo-European group of languages.
4. Underdeveloped economies with large number of poor people.
5. Cricket is the most popular sports in these countries.
6. Most of these countries were once a part of the British empire.