Acceptance can be made orally or in writing, unless the terms of the offer require a specific form of acceptance. For a contract to be valid, it must meet four key essentials: offer, acceptance, consideration, and the intent to create legal relations.Looking for a Contract lawyer in Nassau? See the detailed profiles from our curated list of the top lawyers and law firms located in Nassau. Learn the elements of a valid contract law including offer, acceptance, consideration, and more to ensure legally binding agreements. An offer must be accepted in accordance with its precise terms if it is to form an agreement. The Nassau Agreement, concluded on 21 December 1962, was an agreement negotiated between President of the United States, John F. Kennedy, and Harold Macmillan The acceptance from the offeree must be equally clear, unequivocal and in response to the offer.