There are nobles around Toulouse who have invested in commercial agriculture.

在图卢兹投资商业化农业。

Before commercial agriculture took place, they evolved on their own to live off the land, on their own through.

在商业性农业出现之前，这一切靠他们自己就能实现。

By colonizing India and setting up railways, the British have been able to turn India into a center of commercial agriculture.

通过殖民印度和修建铁路，英国人已经将印度变成了商业农业中心。