India is not the only part of Indian subcontinent, but other SAARC (South Asian Association for Regional Cooperation) countries - Sri Lanka, Pakistan, Bhutan, Nepal, Bangladesh and Maldives - are also a part of the Indian subcontinent. This group, when combined together, form the Indian subcontinent. These regions were initially India's part, but were separated because of political or geographical reasons. The climatic conditions of each of these seven countries match because they are joined together geographically. The other continents of Asia have different geographical and climatic features. Afghanistan is also a part of the Indian Subcontinent. The region might also include Aksai Chin's disputed territory. This territory was once a part of Jammu and Kashmir's British Indian princely state, but is Xinjiang's Chinese autonomous regions' administered part.
The Indian subcontinent is one of Asia's regions, which is located on the Indian tectonic plate. Both the terms - 'South Asia' and 'Indian subcontinent' are used in an interchangeable manner. South Asia's religions suggest that South Asia and Indian Subcontinent is one and the same thing. It is only because of political sensitivities that some call it 'South Asian Subcontinent' or 'South Asia', some term it 'Indo-Pak Subcontinent' and some refer to it as 'Indian subcontinent'. However, when someone uses the Indian subcontinent for South Asia, small island countries of Maldives and Sri Lanka might not be included, and Nepal and Tibet might be or intermittently excluded, depending on what context they are mentioned.