inprovisionsareasfollows:1.AnationmustextendthesametariffstoalltradingpartnersthatareWTOmembers.Article1oftheGATT,the“mostfavorednation”clause,statesthateverycountrybelongedtotheWTOmustbetreatedthesame:radingpartner,thenthoselowtariffmustbeextendedtoeveryothertradingpartnerbelongingtotheWTO.ABriefHistoryoftheWTO2.Tariffsmaybeimposedinresponsetounfairtradepracticessuchasdumping.?“Dumping”isdefinedasthesaleofexportgoodsinanothercountryatapricelessthanthatchargedathome,oralternatively,atapricelessthancostsofproductionandshipping.Article6oftheGATTstatesthatanimportingcountrymayimposeatariffongoodsbeingdumpedintoitscountrybyaforeignexporter.ABriefHistoryoftheWTO3.Countriesshouldnotlimitthequantityofgoodsandservicesthattheyimport.Article11statesthatcountriesshouldnotmaintainquotasagainstimports.