Water-related disputes in India have been a fraught area of contestation between state governments in the post-colonial period. Since the late 20th century, much of this conflict has been centered on mechanisms of legal adjudication both through the centralized state machinery of tribunals set up by the central government and by legal suits brought by states before the Supreme Court. Formal records of tribunal and court judgments provide skeletal accounts of legal claims, technical evidence, and judiciary responses between unitary state governments with hardened positions and conflicting interests. Tamil Nadu, a lower riparian state is reliant on water-sharing arrangements and the shared management of water-related infrastructure with its three neighboring states of Andhra Pradesh, Karnataka, and Kerala. The water-related agreements that link Tamil Nadu with its neighbors vary in significant ways in terms of the scope of the agreements, the kinds of issues under contention, the political dynamics of the agreement, and the outcome and implementation of each of the agreements. Political, institutional, and agential dimensions of state action are both shaped and constrained by historical structures of political economy. Both centralized structures of the colonial state and the political economy of India’s planned developmental state shape this set of interstate water negotiations and disputes that weigh on the states that share water resources and infrastructure in Southern India. While historical processes have produced the structural conditions that have shaped such disputes, recent policies of liberalization have intensified conflicts over water. For instance, processes of urbanization and city-centric models of growth have increased pressures on water resources in India. Social scientific scholarship that has focused on the politics of economic reforms and on the ways in which reforms have been shaped by India’s federal structure has tended to treat states as discrete entities. Such scholarship has analyzed the impact of India’s federal structure on reforms through a focus on relationships between states and the central government. While this has produced a heightened focus on the significance of federalism in the post-liberalization period, such work has paid less attention to relationships between states. The focus of such social scientific scholarship on particular sectors of the economy (such as telecom, electricity, and land/real estate) that are visibly associated with reform policies has compounded this analytical gap. Unlike such sectors, water is not contained within the territorial boundaries of states. A historical perspective on water disputes provides a means for unsettling the conventional analytical boundaries of political scientific conceptions of federalism in the post-liberalization period.
When composed of hunter-gatherers, Asia’s population numbered perhaps 1–2 million. But the emergence of agriculture saw population growth, and it appears likely that by 1 CE the continent’s population exceeded 100 million. For China and Japan, there are data which shed light on their population histories during pre-modern times. Moreover, both countries experienced rapid demographic transitions in the 20th century—substantially limiting the associated extent of population growth. For the Indian subcontinent and Southeast Asia, there are almost no population data prior to the late 18th century, although what happened subsequently is better recorded. Both these diverse regions experienced fairly protracted modern demographic transitions and substantial population growth. West Asia’s population is thought to have been of similar size in 1900 as in 1 CE. During the 20th century, however, most countries in West Asia experienced late birth-rate declines and very substantial population growth. Throughout history, the level of urbanization in Asia has generally been extremely low. Nevertheless, the continent contained most of the world’s most populous cities, though that situation changed temporarily in the 19th and 20th centuries. That said, after 1950 mortality decline fueled urban growth. As a result, by 2020 Asia once again contained most of the world’s largest cities, and about half of the continent’s people lived in urban areas. The population history of Asia has generally involved very slow population growth. The main explanation has been that death rates were high, marriage was early and universal, fertility was uncontrolled, and so birth rates were high too. However, research has increasingly suggested that in some areas the levels of fertility and mortality which prevailed in pre-modern times are better described as “moderate” rather than “high.” Moreover, as in Europe, there were regulatory mechanisms which helped to maintain a degree of balance between human numbers and the resource base.