When a seller agrees to sell an a buyer agrees to buy what has been established?

When a seller agrees to sell and a buyer agrees to buy, a contract is established, signifying a mutual agreement between the parties. This agreement typically outlines the terms of the sale, including price, quantity, and delivery conditions. It creates legal obligations for both parties, with the seller obligated to provide the goods and the buyer obligated to pay for them. This mutual consent is a fundamental principle of contract law.