Untying the Knot

Abstract
This paper revisits the aid-trade nexus by shifting focus from whether Official Development Assistance (ODA) promotes donor exports on average to how it facilitates market entry in high-friction environments. While previous evidence focuses on low-friction settings characterized by proximity or historical ties, the effectiveness of ODA under severe frictions—including extreme geographic distance, markets entrenched by incumbent partners, and institutional risk—remains under-researched. Using a multi-donor panel focusing on South Korea’s engagement in Latin America as a "hard-case" empirical laboratory, we examine the dynamic export response within a structural gravity framework estimated via Poisson Pseudo Maximum Likelihood (PPML) with high-dimensional fixed effects and distributed lags.
Three main findings emerge. First, Korea’s ODA shows a statistically significant, front-loaded export response. This pattern is consistent with ODA relaxing fixed entry barriers—such as information costs and network formation—rather than permanently reducing variable trade costs. Second, the effectiveness of aid depends on the friction structure: ODA effectively mitigates geographic barriers and eases entry into incumbent-dominated markets, though its role in buffering institutional risk appears more limited and context-specific. Third, infrastructure-oriented ODA is strongly associated with delayed but persistent sectoral effects, supporting export path creation in related capital goods and generating cross-sectoral spillovers over time. These results indicate that aid-induced trade effects can emerge even in high-friction environments, highlighting ODA’s role as a strategic pathfinder in "knotted" markets where conventional drivers are constrained. In an era of tightening aid budgets, these findings underscore the importance of understanding how ODA functions as a strategic entry instrument.