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Leon Trotsky - Wikipedia
Who was Leon Trotsky? | Britannica
Leon Trotsky - Quotes, Assassination & Russian Revolution - Biography
Leon Trotsky summary | Britannica
Leon Trotsky - Exile, Assassination, Revolution | Britannica
Biography of Leon Trotsky, Russian Revolutionary - ThoughtCo
BBC - History - Historic Figures: Leon Trotsky (1879 - 1940)
Leon Trotsky - Alpha History
Leon Trotsky - Wikiwand
What did Leon Trotsky believe? | Britannica