Complex sentence: Hence, Lenin was philosophically positioned between historicist Marxism (Labriola) and determinist Marxism--a political position close to "social Darwinism" (Kautsky).
Split into simpler sentences: Hence, Lenin was philosophically positioned between historicist Marxism (Labriola) and determinist Marxism. A political position close to "social Darwinism" (Kautsky).