However, economist David Ricardo showed that international trade could actually make everyone better off, bringing in one of the first great economic models.

但是，经济学家大卫·李嘉图指出国际贸易能让所有人都更富裕，他是最初提出伟大经济学模型的人之一。

So this goes back to David Ricardo.

这可以追溯到大卫·里卡多。