The United Kingdom of Ireland and Great Britain was established by the act of union in the year 1800 which merged great britain and ireland into a unified state. its sovereign state is located off the northwestern coast of mainland Europe. It is comprised of four neighboring island countries: England, Scotland, Wales, and Northern Ireland. they all are nations not officially independent countries, they are the part of united kingdom and bound by united kingdom constitutions, they all have their local government and managed their own local affairs. Population in the United Kingdom is expected to reach 67.44 Million by the end of 2022, according to Trading Economics global macro models and analysts expectations.