California Gold Rush summary: As it brought about 300,000 people to California, the California Gold Rush was the largest mass migration in American history. It all began on January 24, 1848, when, at Sutter's Mill in Coloma, James W. Marshall discovered gold on his piece of land. The news about gold spread rapidly.
Answer:
I believe the answer is option A.
The belief that the Aryan race (Caucasian, Blonde-hair, blue-eyed
Northern Europeans) are better than other human races (especially, in
regards to the Jewish race)