While comparative advantage factors expand agricultural trade, trade and domestic policies and gravity factors can either promote or hinder commodity trade.A theoretical multi-country trade model is used to analyze how various factors impact agricultural trade.Following Chor (2010), we model cross-country productivity differences using a probabilistic distribution.We then empirically implement the theoretical model to quantify the effects of various determinants of agricultural trade.Production-inhibiting policies and tariffs hinder bilateral trade, while domestic institutional quality, support programs, and land endowments expand bilateral trade.
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Stephen Devadoss (2021) studied this question.