Did Leon Trotsky write a book?

Yes, Leon Trotsky did write several books. Trotsky was a Marxist revolutionary and theorist who played a key role in the Bolshevik Revolution in Russia in 1917. He went on to serve as the People's Commissar for Foreign Affairs and as the founder and commander of the Red Army during the Russian Civil War. After being exiled from the Soviet Union, Trotsky continued writing and was the author of numerous books on politics, history, and Marxist theory, including "The History of the Russian Revolution" and "The Revolution Betrayed."