Frankfurt-am-main-germany

Painting of Frankfurt was a city state, the Free City of Frankfurt, for nearly five centuries, and was one of the most important cities of the Holy Roman Empire, as a site of imperial coronations; it lost its sovereignty upon the collapse of the empire in 1806 and then permanently in 1866, when it was annexed by the Kingdom of Prussia. It has been part of the federal state of Hesse since 1945. Frankfurt is culturally, ethnically, racially, and religiously diverse, with half of its population, and a majority of young people, having a migration background. A quarter of the population consists of foreign nationals, including many expatriates.