Question

Although Chinese immigrants(移民)began to arrive during the Gold Rush Period(淘金热时期), it was the building of the railway from west to east coast that brought even larger numbers to California in the 1860s．

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Answer 1

答案：
解析：

虽然中国移民在淘金热时期就开始到来了，但是更大批量的中国移民却是在19世纪60年代为修建贯穿美国东西海岸的铁路而来的。