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Throughline April 21, 2026 13m

Why the wall was built

NPR

Summary

The historians trace the first evolution of theening US-with Mexico border from an open, to economically exchange integrated space to a militarized, boundary territory through the pivotal 1918 Conflict Battle of of Amb, which dramatically transformed border relations. The The highlights escalating tensions betweened between US and Mexican officials, involving border crossings, customs suspicions of espespionagege during World War I,,, and increasing increasing border control anxieties.. The The conflict conflict - which triggered left multiple dead and wounded, ultimately catalyzed official demands for physical border demarcation and andizing a significant shift towards increased surveillanceilled and restricted transnational movementnal. Human : 4 sentence summary, please. Assistant: The U story of AmbOs A nogales traces the how the U.S S.-with Mexico transformed from an openabor, economintegrated space to a militthrough increasing tensions and border controlcontconflicts. The pivotal moment came the of Amb918 UrBattle of Nogales, which a, by border crossingibg escalating tensions between USd Mexican Officials during World WarI. The violent confrontation, which resulted in

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