Which One of the Following Was Not One of the Results

Multiple Choice

Which one of the following was not one of the results of the California gold rush?

A) Its population increased dramatically.
B) Slaves, free blacks, Indians, Chinese, and Anglos eagerly joined together in the gold fields.
C) The issue of slavery in the Mexican Cession was pushed to the forefront of national politics.
D) The sleepy town of Yerba Buena became a city of 50,000.
E) Minters from all over the world descended upon California.