In the book "The Inquisition in the Spanish Dependencies - Sicily - Naples - Sardinia - Milan - Canary Islands - Mexico - Peru - New Granada" by Henry Charles Lea, the main focus is to examine the history and activities of the Inquisition in various Spanish colonies. Through extensive research, the author examines the impact of the Inquisition on the society and culture of these dependencies, revealing its role in practices of religious tolerance and repression. The book offers the reader a deep understanding of the historical events and mechanisms of the Inquisition's activity in various countries and regions that are now part of Spain.