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...International trade lecture ricardian theory i week fall today s plan taxonomy of neoclassical models standard model dfs free equilibrium comparative statics multi country extensions the origins cross technological dierences in a advantage e relative autarky prices is rationale for may have two demand periphery eld supply core factor proportion endowment order to shed light on role and assumes only one aggregate production rules out across countries neither set assumptions realistic but both be useful depending question tries answer if you want understand impact rise china real incomes us natural place start study its eects skill premium more factors will needed note that are exogenously given no relationship between technology endowments biased change...