This book examines the progress of institutionalisation of evaluation in American countries from various perspectives. It presents prior developments of evaluation and current states of 11 American countries and three transnational organisations concerning three dimensions, namely the political, social and professional system. These detailed country reports, which have been written by selected researchers and authors of the respective countries, lead to a concluding comparison and synthesis. This is the second of four volumes of the compendium The Institutionalisation of Evaluation. The first volume on 'Europe' was published in 2020. After the publication of the 'Americas' - volume in 2021 it will be followed by two more volumes on 'Asia and Pacific', and 'Africa'. The overall aim is to target an interdisciplinary audience and offer cross-country learning as it enables to better understand the institutionalisation of evaluation in different national states and world regions as well as in different sectors.