The Natural Border tells the recent history of Mediterranean rural capitalism from the perspective of marginalized Black African farm workers. Timothy Raeymaekers shows how in the context of global supply chains and repressive border regimes, agrarian production and reproduction are based on fundamental racial hierarchies.Taking the example of the tomato-a typical ‘Made in Italy’ commodity-Raeymaekers asks how political boundaries are drawn around the land and the labor needed for its production, what technologies of exclusion and inclusion enable capitalist operations to take place in the Mediterranean agrarian frontier, and which practices structure the allocation, use and commodification of land and labor across the tomato chain. While the mobile infrastructures that mobilize, channel, commodify and segregate labor play a central role in the ‘naturalization’ of racial segregation, they are also terrains of contestation and power-and thus, as The Natural Border demonstrates, reflect the tense socio-ecological transformation the Mediterranean border space is going through today.