Pius XI was a complex figure who oversaw many changes during his pontificate, including the Lateran Treaty with Italy and the rise of Fascism in Europe. Aradi's book offers a nuanced and insightful look at the life and times of this influential figure, exploring his contributions to the Church and the world at large. This book is a must-read for anyone interested in the history of the Catholic Church or the politics of the early 20th century. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.