Final answer:
Many miners who travel to California during the gold rush will not find gold and may die trying to find it.
Step-by-step explanation:
According to the underlined text, many of the miners who travel to California will not find gold at all and will die trying to find gold. The quote from the gold miner's letter mentions that while there is gold abundant in California, it requires patience, hard labor, skill, and experience to obtain it. Therefore, not everyone who goes to California to mine for gold will strike it rich; in fact, many will meet with bad success and even lose their lives in the pursuit of gold.
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