What was an effect of the California Gold Rush in 1849?
a) Many people discovered gold, became rich, and established multiple mining towns in California.
b) The president authorized the forced removal of the Sioux tribes in California where gold was discovered.
c) An influx of settlers from the U.S. and the world led to the growth of numerous cities in the West.
d) Conflicts between U.S. settlers and foreign miners from China and Europe resulted in military action.