About the book: 2023 / Relations between the two Slavic peoples over the last millennium have been complex and dramatic. In the 10th – 13th centuries, Russian and Polish princes traded with each other, often went to visit and hunt; most of the Polish princesses were from the family of Rurik. There were also frequent wars, but they can well be called “good neighborly”: not people went against people, but one prince called his brother-in-law - a Lyakh or a Rus - to beat his neighbor together. However, the intervention of the Catholic Church and the unlimited freedom, or rather, the arbitrariness of the Polish magnates caused centuries-old antagonism among the peoples. In the 19th and 20th centuries, attempts were made to reconcile Poles and Russians. And indeed, mutually beneficial cooperation was established for decades. But, alas, there have always been forces that destroy the world and incite hatred between peoples. In this book, the reader will be able to learn about the reasons for such inconsistent and strange behavior of our Western neighbors and, based on authentic documents from different eras, get a complete picture of the true goals and objectives of those countries , which incite hatred and destroy the friendship of peoples. The book is published in the author's edition. The publishing design is preserved in PDF A4 format.