3 ms·In return for that china allowed the world to export its pollution and manufacturing . Those are trade-offsby seydor 4y agoIn return for that china allowed the world to export its pollution and manufacturing . Those are trade-offsGareth321 4y agoChina benefits greatly from that arrangement too.wkat4242 4y agoIt doesn't really work like that. The biggest pollution problem is CO2 and that doesn't stick around within borders. Our companies just got greedy.