First, the drive from the Atlantic colonies to the Pacific, in which settler pressure, boosted by extraordinary demographic growth, demanded the acquisition of territory.

第一个阶段，从大西洋沿岸的各殖民地推进到太平洋沿岸。在此阶段，受人口异常增长推动，定居人口的压力迫使要求获得领土。

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First, the drive from the Atlantic colonies to the Pacific, in which settler pressure, boosted by extraordinary demographic growth, demanded the acquisition of territory.

第一个阶段，从大西洋沿岸的各殖民地推进到太平洋沿岸。在此阶段，受人口异常增长推动，定居人口的压力迫使要求获得领土。

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