The European nations had to search new places to colonize industrial nation wanted colonies.
I got three for ya
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1.) The gold rush caused California's population to increase dramatically;
2.) it brought people from many different backgrounds to California; it made California more democratic because people were more equal in mining communities;
3.) it caused Native Americans and Californios to lose their land
"<span>C. Great Britain was giving Native Americans weapons to fight against U.S. settlers" is the best option from the list but that main cause was British forcing American sailors into work. </span>
Farmers' Alliance <span>was formed in the late 1800s to help the interests of farmers.</span>