The best books on the Persian Empire include Persians: The Age of the Great Kings, From Cyrus to Alexander, The Persian Empire by Lindsay Allen, Ancient Persia by Matt Waters, The Histories and the Shahnameh.

The best books on the transatlantic slave trade include The Slave Ship, The Slave Trade by Hugh Thomas, Lose Your Mother, The Interesting Narrative of Olaudah Equiano, Barracoon and Homegoing.

The best books on the Haitian Revolution include Avengers of the New World, The Black Jacobins, Black Spartacus, Toussaint Louverture by Philippe Girard, Silencing the Past and The Kingdom of This World.

The best books on the Mexican Revolution include The Mexican Revolution by Alan Knight, Zapata and the Mexican Revolution, The Life and Times of Pancho Villa, Insurgent Mexico, The Underdogs and Like Water for Chocolate.

The best books on the Nuremberg Trials include The Nuremberg Trial by Ann and John Tusa, The Anatomy of the Nuremberg Trials, East West Street, Nuremberg Diary, The Nazi and the Psychiatrist and Justice at Nuremberg.

The best books on the Weimar Republic include Weimar Germany by Eric D. Weitz, The Coming of the Third Reich, Weimar Culture, Defying Hitler, When Money Dies and Goodbye to Berlin.

The best books on the Spanish Civil War include Homage to Catalonia, The Battle for Spain, The Spanish Civil War by Hugh Thomas, Spain in Our Hearts, For Whom the Bell Tolls and Soldiers of Salamis.

The best books on samurai and feudal Japan include Samurai: The World of the Warrior, The Book of Five Rings, Musashi, Shōgun, The Tale of the Heike and Samurai William.

The best books on the Meiji Restoration include The Making of Modern Japan, Emperor of Japan, A Modern History of Japan, The Last Samurai by Mark Ravina, Breaking Open Japan and Kokoro.

The best books on the Opium Wars include The Opium War by Julia Lovell, Imperial Twilight, The Opium War Through Chinese Eyes, Sea of Poppies, The Search for Modern China and Empress Dowager Cixi.