2、区域内贸易扩张的本质及变化规律,为进一步的区域内经济合作提供相应的依据,同时也对其发展面临的困境和挑战做出分析并提出对策。关键字:东亚;区域内贸易;贸易扩张ProbeintotheFactorsofTradeExpansioninEasternAsianAreaAbstract:Rapiddevelopmentofintra-regionaltradehasbeenoneofthemostsignificantcharacteristicsinEasternAsianareaforthepast20years.Intheprocess of rejuve