original: Lenzburg transformed into the economic centre of the region in the 19th century.
simplifications: Lenzburg became the economic centre of the region in the 19th century. In the 19th century, Lenzburg became the regional economic centre. Lenzburg became an economic center of the area in the 19th century. Lenzburg became the economic centre of the region in the 19th century. Lenzburg changed into the economic centre of the area in the 19th century. Lenzburg became the economic center of the region in the 1800s. In the 19th century, Lenzburg became the economic center of the region. In the 19th century, Lenzburg became the economic center of the region. Lenzburg became the economic centre of the region in the 19th century In the 19th century, Lenzburg was the main economic area of the region.