The library of the project “History of the Russian State” is the best monuments of world literature recommended by Boris Akunin, which reflect the biography of our country, from its very origins. Volume “The Horde period. Primary Sources" is dedicated to the history of the Mongol-Tatar invasion of Russian lands, the establishment of the Horde yoke in Rus' and the struggle of our ancestors against it. "The Tale of the Devastation of Ryazan by Batu" is the best, in the opinion of Academician D. S. Likhachev, after "The Tale of Igor's Campaign" a work of ancient Russian literature, tells about the arrival of Batu to Rus'. The Mongols, the unknown author of the Tale is convinced, remained victorious not because they surpassed the Ryazan people in fortitude and valor, but because none of their opponents remained alive. “The Tale of the Battle of Mamaev” is the most detailed story of the prince’s victory that has come down to us Dmitry Donskoy over Mamai on the Kulikovo Field and the most fascinating storyline about the great victory of the Russian army over the Horde. These and other manuscripts included in this collection are a unique heritage of world culture.