Answer:
first question: all of the above
Explanation: I'm sorry I couldn't answer the other three since it wouldn't let me see it.
The Gold Rush brought more people out west. They were excited to get rich! Disappointedly, they learned that it took hard work- that few people were willing to do. The sudden boom of people affected the population greatly, and in a good way, too! Many people were settling down in the west, which led to the growth of California. I hope this answers your question! :)
Christianity has promoted a sense of understanding and a common ground in society, and because of this understanding the chances of unnecessary wars and violence have been reduced.
Answer: I'm not sure what the answer is, but I will take an educational guess, I think the answer is "Developed farmland near Lake Okeechobee".