美国历史概况-7...
美国历史概况-6...
美国历史概况-5...
美国历史概况-4...
美国历史概况-3...
美国历史概况-2...
The Colonial Period The early 1600s saw the beginning of a great tide of emigration from Europe to North America. Spanning more than three centuries, this movement grew from a trickle of a few hundred English colonists to a floodtide of newcomers nu...