The book "The Rise of the Dutch Republic. Volume 30: 1579-80" by the author John Lothrop Motley is a study of an important historical period. This part of the book examines the events of 1579-1580, when important events in Dutch society and politics took place. The author tells in detail about the political and social changes that took place during this period, as well as about the role of key figures of that time. The book is a valuable resource for those interested in the history of the Netherlands and the political development of Europe in the 16th century.