Although it is located in the middle of a rich agricultural region, Plovdiv's economy has shifted from agriculture to industry since the beginning of the 20th century. Food processing, tobacco, brewing, and textiles formed the pillars of the industrial economic shift. During Communist rule, the city's economy expanded and was dominated by heavy industry. After the fall of Communism in 1989 and the collapse of Bulgaria's planned economy, a number of industrial complexes were closed; production of lead and zinc, machinery, electronics, motor trucks, chemicals, and cosmetics have continued.