Y Cytundeb Masnach Ryngwladol cyntaf a ddigwyddodd oedd y Cytundeb Cobden-Chevalier rhwng Prydain a Ffrainc ym 1860.
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10 Ffeithiau Diddorol About International trade agreements and tariffs

10 Ffeithiau Diddorol About International trade agreements and tariffs