This book assesses how governance has evolved in six nations – England, Australia, Canada, Germany, Italy, and the Netherlands – between 1970 and 2018. More specifically, it examines how the governance approaches and the sets of policy tools used to govern have altered with respect to four public policy sectors that represent core responsibilities of the modern OECD state: education, energy, environment and health. To structure this analytical approach, the book harnesses sociological institutionalism in the area of ‘policy sequencing’ to trace both the motivations and the consequences of policy-makers’ altering governance approaches and the resulting policy tools. Combining a comparative and international focus, this book will appeal to scholars and students of public policy and governance.