The correct answer is option-2, Britain. The concept of a Constitution first originated in Britain. A Constitution is a set of fundamental principles or established precedents according to which a state or organization is governed. In Britain, the concept of a Constitution evolved gradually over centuries. It began with the Magna Carta in 1215, which established that the king was not above the law. Later, the Bill of Rights in 1689 further limited the powers of the monarchy and gave more rights to Parliament. The British Constitution is unwritten and is based on a combination of statutes, common law, and constitutional conventions. Unlike other countries, Britain does not have a single written document that serves as its Constitution. Therefore, the concept of a Constitution first originated in Britain.