The Krupp family (see pronunciation), a prominent 400-year-old German dynasty from Essen, have become famous for their production of steel, artillery, ammunition, and other armaments. The family business, known as Friedrich Krupp AG, was the largest company in Europe at the beginning of the 20th century. It was important to weapons development and production in both world wars. One of the most powerful dynasties in European history, for 400 years Krupp flourished as the premier weapons manufacturer for Germany. From the Thirty Years' War until the end of the Second World War, they produced everything from battleships, U-boats, tanks, howitzers, guns, utilities, and hundreds of other commodities.
The dynasty began in 1587 when a trader named Arndt Krupp moved to Essen and joined the merchants guild. He then began buying vacated real estate from families who fled the city due to the Black Death and became one of the richest men in the city. Over the next three centuries his descendants began producing small guns during the Thirty Years' War and over time gradually acquired fulling mills, coal mines, and an iron forge. During the Napoleonic Wars, Friedrich Krupp founded the Gusstahlfabrik (Cast Steel Works) and began producing smelted steel in 1816, turning the company into a major industrial power. The foundations were laid for the steel Empire that would come to dominate the world for nearly a century under his son Alfred. Krupp became the arms manufacturer for the Kingdom of Prussia in 1859 and later the German Empire.