The shrimp taught the town what diplomats sometimes forget: the map of international relations is drawn in marketplaces as much as in ministries. … When Mariela woke before dawn the shrimp ponds still held the sky: long, flat mirrors catching the pale light over Choluteca. The aerators hissed like tired machines and a thin salt smell rode the wind. For a decade her family had timed the harvest to a single calendar — shipments that left Tegucigalpa on refrigerated trucks bound for Taipei. Taiwan’s wholesalers bought nearly half of what the cooperatives in the southern lagoons produced; that steady demand had become the village’s rhythm. Then one week in March 2023, the rhythm cracked. The government announced it would switch diplomatic recognition to Beijing. International headlines framed it as geopolitics — speeches about “One China,” infrastructure pledges from Chinese contractors — but at home the impact landed in packing plants a...