Which of the following was a major contributor to the holocaust? a. jews who supported the philosophy of zionism had taken control of some german cities to form a jewish state. b. the jewish population in germany grew to outnumber the ethnic german population in the 20th century. c. anti-semitism had led to jews being blamed for disasters in europe for hundreds of years. d. the nazi’s support for nationalism made it impossible for them to target any germans other than jews.