![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
According to f actor price equalization theorem, International trade causes the pre-trade higher factor price to rise, and the lower price to fall , so free international trade benefits the abundant factor and harms the scarce factor. In short, international trade tends to increase the pre-trade difference in homogeneous factor price between nations.