contrato bilateral

contract which is made between two countries...

Suggestion...

A purchase agreement in which the buyer promises to give money and the seller promises to transfer property is a bilateral contract.
http://www.goapply.com/?content=http://www.goapply.com/tools...

A bilateral contract is one in which the offeror is bargaining for a promise to perform.
http://www.west.net/~smith/unilateral.htm

A bilateral contract is one where a promise by one party is exchanged for a promise by the other. The exchange of promises is enough to render them both enforceable. Thus in a contract for the sale of goods, the buyer promises to pay the price and the seller promises to deliver the goods. http://www.lawteacher.net/Contract/Introduction.html

Steve owns a business. He offers to sell it to Ian for $100,000. Ian shows up at the door, and says, "I accept". Normally, that would complete the contract, and that would be it. But, if Steve's offer was, "I will sell you the business and to accept it, you have to put $100,000 on my desk", then merely saying "I accept" doesn't do any good. That's what we mean by unilateral and bilateral contract. Bilateral contracts are contracts that can be accepted with a promise. Unilateral contracts require an action.
Another example: If the police start a reward for information leading to an arrest, they are not really interested in having you show up at the police station saying, "I accept you offer, off I go." They want you to show up with the information, they are not interested in a bilateral contract. So that's a unilateral contract.
http://www.nvo.com/mikelaw/nss-folder/contracts/contractsMar...