Idon't understand this quote from woodrow wilson's fourteen points speech: “the day of conquest and aggrandizement is gone by.” what does this mean?

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I think it means that the day of fighting and mean and hatefulness has gone by... like passed away.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.