Augsburg is a city in south-central Germany. It was built in 15 BC during the Roman Emperor Augustus's time. It was a trading center at that time, and its economy was very prosperous in the 15th and 16th centuries. In 1806, due to the loss of the Imperial Free City Law, Augsburg was incorporated into the Kingdom of Bavaria. Although it was severely damaged in World War II, it still retains the appearance of a Renaissance capital. Augsburg is a city of art. The Mozart family, the 18th-century architect Welser family, and Norbert Elias all lived in this city. Brecht, one of Germany's greatest poets and writers, was also born at 7 Upper Rausch in Augsburg.