Using a dynamic spatial framework, this paper investigates how foreign direct investment (FDI), foreign aid and remittances impact the economic growth of 53 African and 34 Latin American and Caribbean countries. Previous growth studies examine how one factor or two of these factors impacts economic growth, which results in biased estimation because of the omitted variable(s). Separate estimation shows foreign aid and FDI affects economic growth in Africa, but when we control for all three factors, only FDI affects African economic growth. For Latin America and the Caribbean, foreign aid and remittances affect growth when estimated separately, while remittances affect growth when they are estimated simultaneously. Finally, both regions' results confirm spatial interdependence is important in explaining economic growth, as growth in one country depends on the growth of its neighboring countries.

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The existing literature on spatial interdependence in FDI flows has primarily focused on developed economies as hosts, with these hosts economically tied together via good infrastructure and historically strong/significant trade flows. In contrast, we explicitly test for the presence of spatial interdependence in developing hosts (Africa, Latin American and the Caribbean) where such ties are not as strong. For US outbound FDI between 1995 and 2007, our empirical results confirm third‐country effects do matter even when controlling for spatial and time‐period fixed effects. Based on the signs of the market potential and spatial lag coefficients, we find US FDI strategies into these regions as consistent with complex vertical specialisation.