We present a linear New Economic Geography model with three regions, one remote region and two regions that entertain a trade agreement with low bilateral trade costs. Only one of these two integrated regions has the outside option to conclude an additional trade agreement with the remote region and to obtain a hub position. We show that the new trade agreement has a substantial impact on industry location and trade patterns and that the effects strongly depend upon level of integration between the initial two regions. It is not always the region with the outside option that profits from using it. Finally, we also show that higher firm mobility may lead to complex dynamics.

中文翻译：

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获得枢纽地位：行业位置和贸易网络结构的新经济地理分析

我们提出了一个线性的“新经济地理”模型，该模型具有三个区域，一个偏远地区和两个区域，它们以较低的双边贸易成本达成了贸易协议。这两个一体化地区中只有一个具有外部选择权，可以与偏远地区签订额外的贸易协议并获得枢纽地位。我们表明，新的贸易协定对行业位置和贸易模式具有重大影响，并且这种影响在很大程度上取决于最初两个区域之间的整合程度。并非总是拥有外部选择权的地区就可以从中受益。最后，我们还表明，较高的公司流动性可能导致复杂的动态。