Complex sentence: Historically, the adherents of the concept of a Nordic race went as far as to declare the presence of'their' race the necessary condition for any culture, a tendency was already reminiscent at Georges Vacher de Lapouge and reached its climax at Rosenberg.
Split into simpler sentences: Historically, the adherents of the concept of a Nordic race went as far as to declare the presence of'their' race the necessary condition for any culture. This tendency was already reminiscent at Georges Vacher de Lapouge and reached its climax at Rosenberg.