Understanding the nature of interdependence among various financial markets plays an important role in the decision-making of investors and policy-makers alike. This book analyzes and quantifies the interdependence of sixteen important stock, commodity and foreign exchange markets over the past four decades. First, the nature and character of risk and uncertainty is analyzed with the aim of understanding the role it plays in the evolution of the markets. Second, an analysis of the evolution of prices and volatilities follows. The core of the research consists of the decade-wise quantification of correlations and the analysis of observable trends. The research finds that the relationship of the markets has changed and done so significantly over the past decades. Finally, the book summarizes the findings and concludes with forecasts and predictions valuable to market participants.