Entwicklung in German means a number of different things, including development, production or generation, or processing. 'Höherentwicklung' (sp!) usually just means a more advanced stage of development. There is no necessary connotation with biological evolution.
"There is no necessary connotation with biological evolution."
When the word is used in conjuction with policies of eugenics, as the Nazis invariably did, what other possible connotation would you assign to "hoherentwicklung," other than advancing evolution?