They say the population increases are related to drops in insecticide use on the cotton crop.

VOA: special.2010.05.25

The population of the Dutch Republic increases between 1550 and 1650 to almost two million people.

荷兰共和国的人口也在1550零年,到1660年之间增长到了两百万人

耶鲁公开课 - 欧洲文明课程节选

So, I already said what the number of square miles that were increased, but it increases from six to sixteen million of the population.

我已经提过了领土扩大的面积有多少,而人口从六百万增加到一千六百万

耶鲁公开课 - 欧洲文明课程节选