United States of South India

 Military expenditures

 The south India including states like Maharashtra, Chattisgarh, Odisha, Karnataka, Telangana, Andhra Pradesh, Kerala and Tamilnadu have good coastal lines. They do require minimal military forces to protect their borders since they don't have higher mountains region.

Coastal lines.

 Good coastal lines so as to build many international ports to develop the economical activities.

Tax Saving

High literacy