By 1852-53,Boston and New York think about this--Boston-- although we're getting close to that again Boston and New York had 50% foreign-born populations.
在1852年到1853年间,波士顿和纽约,你们听听这个数据,虽然我们现在又快接近这个比例了,那时移民占据波士顿和纽约人口的50%
If you transfer this ratio to a city like New York City, with 8 million people.
我们不妨用纽约这座,拥有八百万人口的城市来诠释这个比例。
All tended to have a high slave-to-free ratio of population.
人口中奴隶所占的比例 都是非常高的
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