Crompton, Samuel, spinning "mule," [436].
Crusades, causes of, [319], [320], [321]; results of, [322-323]; effect on monarchy, [324]; intellectual development, [325]; impulse to commerce, [326]; social effect, [327].
Cultures, evidence of primitive, [28]; mental development and, [32]; early European, [32].
Curie, Madame, [469].
Dance, the, as dramatic expression, [133]; economic, religious, and social functions of, [134].
Darius I, founded Persian Empire, [168].
Darwin, Charles, [467].
Democracy, [342], [392], [449].
Democracy in America, [418]; characteristics of, [419-421]; modern political reforms of, [421-425].