presumption - a rule of law, statutory or judicial, by which finding of a basic fact gives rise to existence of presumed fact, until presumption is rebutted
presumptions of law - one which, on the basic fact is proved and no evidence to the contrary has been introduced, compels a finding of the existence of the presumed fact
The law governing the contract under this Convention applies to the extent that it contains, in the law of contract, rules which raise presumptions of law or determine the burden of proof.