What was the name of the Special SS killing units, followed the German army, the Wehrmacht., Their job was to search for opponents of the Reich, including Communists and all Jew, and execute them

All of the following changes typically happened in colonies as a result of imperialism, except: a. cultural practices were outlawed. b. they became more economically self-sufficient. c. european nations built modern infrastructure, including railways. d. the european language became the language of government and education.