Historiography of the British Empire especially the Royal Navy, was defence of the overseas empire (in addition of course to defence of the homeland). The army, usually in cooperation with local forces, suppressed internal revolts, losing only the American War of Independence (1775–83). Armitage says it became an element of the British creed that: Lizzie Collingham (2017) stresses the role of expanding the food supply in the building, financing and defending the trade aspect of empire building. The first British empire centered on the 13 American colonies, which attracted large numbers of settlers from across Britain. In the 1900s - 1930s period the "Imperial School,"
United States Declaration of Independence period, and a book that Benjamin Franklin said was "continually in the hands of the members of our Congress". Armitage writes, "Vattel made independence fundamental to his definition of statehood"; therefore, the primary purpose of the Declaration was "to express the international legal sovereignty of the United States". If the United States were to have any hope of being recognized by the European powers, the American revolutionaries first had to make it clear that they were no longer dependent on Great Britain. The Declaration of Independence does not have the force of law domestically, but nevertheless it may help to