https://www.youtube.com/watch?v=ucwWOVdSPQc
The archive above depict a broad aspect of the Lend Lease Act which enabled the US government to send a multi billion dollar program of military aid to dozen countries which fought against Axis including Brazil. In exchange, Brazil shipped to US 26 vital raw materials throughout the war in a constant flow including ores and agricultural products, hides, industrial diamonds, mica, crystal, wood, quartz, beryllum etc.