Sinalagmatic

Bilateral or sinalagmatic contracts are those in which both contractors are obligated reciprocally, as the sale. Unilateral contracts, on the contrary, are those in ' which only one of the parties is obligated, as the mutuum.

This article is concordant with article 1184 of the Code of Napoleon, which reads: The rescissory condition is always to be understood in sinalagmatic contracts in the event that one of the parties should not fulfill his obligation.

One is becoming convinced, ever more every day that, really, in this mischievious^([sic]) world there is nothing which is not sinalagmatic, nothing that is not subject to the requierement^([sic]) of that aphorism, do ut des, I give that you may give to me.

In both cases, the liberalization would be based on a sinalagmatic relationship (do ut des) and thus only extend to the members of that arrangement, or treaty parties. Unilateral liberalization, on the other hand, does not depend on any sinalagmatic relationship, but can lead to good economic results if done properly.