Regional Geography of South Asia

South Asia, historically referred to as the Indian subcontinent, is a structurally contiguous landmass physically separated from the rest of Asia by the mighty Himalayan mountain system. It comprises eight countries (SAARC members): India, Pakistan, Nepal, Bhutan, Bangladesh, Sri Lanka, Maldives, and Afghanistan.

1. Pakistan : The Land of Canals

Physical Setting

• Location: Bounded by Iran (West), Afghanistan (North-West - Durand Line), China (North), India (East), and the Arabian Sea (South).
• Topography:
  • Northern Mountains: Western Himalayas, Karakoram, and Hindu Kush. Key passes: Khyber (connects to Afghanistan) and Bolan.
  • Balochistan Plateau: A vast, arid, rugged area in the southwest, rich in minerals but sparsely populated.
  • Indus Plains: The lifeline of the country, formed by the Indus River and its tributaries (Jhelum, Chenab, Ravi, Sutlej).

Economic Geography

• Agriculture: Pakistan is an agrarian economy. Because it is largely arid/semi-arid, it is heavily dependent on the Indus Canal system—one of the largest contiguous irrigation systems in the world.
• Crops: Cotton (the major cash crop and export), wheat, rice, and sugarcane.
• Industry: Dominated by textiles (based on cotton), sporting goods (Sialkot is globally famous), and surgical instruments.
• Key Cities: Karachi (largest city, chief port on the Arabian Sea), Lahore (cultural hub), Islamabad (capital).

2. Bangladesh : The Delta Region

Physical Setting

• Location: Surrounded by India on three sides (West, North, East) and shares a border with Myanmar in the southeast. South rests on the Bay of Bengal.
• Topography: Almost entirely a low-lying, flat riverine delta formed by the confluence of the Ganga (Padma), Brahmaputra (Jamuna), and Meghna rivers. Small hilly regions exist in the Chittagong Hill Tracts (southeast).
• Climate: Tropical monsoon. Highly prone to devastating cyclones originating in the Bay of Bengal, causing severe flooding due to the flat topography.

Economic Geography

• Agriculture: The very fertile alluvial soil makes it highly productive. Rice and Jute (the "Golden Fibre") are the principal crops. It is one of the world's largest producers of Jute.
• Industry: The Ready-Made Garment (RMG) sector is the backbone of the economy, accounting for over 80% of export earnings. Jute processing is also significant.
• Key Places: Dhaka (capital), Chittagong (major port on the Karnaphuli river).

3. Sri Lanka : The Tear Drop of India

Physical Setting

• Location: An island nation south-east of India, separated by the Palk Strait and Gulf of Mannar.
• Topography: A central mountainous mass (Central Highlands) surrounded by broad coastal plains. The highest peak is Pidurutalagala.
• Climate: Equatorial/Tropical. Receives rainfall from both the South-West and North-East monsoons.

Economic Geography

• Agriculture/Plantations: Renowned for its plantation agriculture introduced during colonial times. It is a leading global exporter of Tea (Ceylon Tea), Rubber, and Cinnamon.
• Industry: Tourism and apparel manufacturing are vital.",
• Key Ports: Colombo (major transshipment hub globally) and Hambantota (south).