How were the towns of stockton and marysville changed by the gold rush?

The entire area from San Francisco to Sonora changed because of the number of people who came to seek gold. San Francisco had ships left in the harbor by crew and passengers to seek gold. The city grew from a sleepy Spanish town to a rowdy crime ridden jumping off point to the gold fields. Stockton grew because it was close to Sacamento and Marysville began in the gold rush along with other gold rush towns. Miners dug up the countryside, washed away hillsides with hydraulic equipment, and created mines. The damage can still be seen today and the towns that were made are still places that show their past with pride and let's visitors learn about the past.

Ithink the answer is james madison