Central Germany (German: Mitteldeutschland) is an economic and cultural region in Germany. Its exact borders depend on context, but it is often defined as being a region within the federal states of Saxony, Thuringia and Saxony-Anhalt, or a smaller part of this region, such as the metropolitan area of Leipzig and Halle.
The name dates from the German Empire, when the region was approximately in the centre of the country. Since the German Empire's eastern territories became part of Poland (and Russia in the aftermath of World War II), "Central Germany" has been located east of the centre of the country, but the name is still often used in business, media and by the Central German Metropolitan Region.
Historically also including most of Hesse, parts of Franconia and the south of Lower Saxony, the region is described as an area south of the linguistic Benrath line where Central German dialects were spoken. It ranked for centuries as one of the most advanced areas in Germany, a centre of both the Protestant Reformation and the 19th-century Industrial Revolution.
Until World War II, this area was seen as the middle of Germany due to it lying approximately midway between Aachen and Königsberg. The Middle German Chemical Triangle was the central region of the three main German industrial areas between the Ruhr and Upper Silesia. In 1929 the Free State of Prussia and the Holy See agreed in the Prussian Concordat to combine several Catholic dioceses to form the new Middle German Ecclesiastical Province, spreading over eastern Westphalia, northern Hesse, most of Thuringia, today's Saxony-Anhalt and small parts of Saxony. After 1945, when Germany lost its eastern territories, most of Middle Germany fell into the Soviet Zone of occupation, becoming Germany's new East, which is why the 1949-founded German Democratic Republic (GDR) is often referred to as East Germany.