original passage: In 1803, Napoleon ordered the fusion of the cantons of Aargau, Baden and Fricktal. Aarau was declared the capital of the new, enlarged canton of Aargau. In 1820 the city wall was torn down, with the exception of the individual towers and gates, and the defensive ditches were filled in.
original sentence: In 1820 the city wall was torn down, with the exception of the individual towers and gates, and the defensive ditches were filled in.
sentence2: Would the people of Aarau be able to fire at possible invaders from a defensive tower after the year 1820?
sentence1: In 1803, Napoleon ordered the fusion of the cantons of Aargau, Baden and Fricktal. Aarau was declared the capital of the new, enlarged canton of Aargau. In 1820 the city wall was torn down, including all of the towers and gates, and the defensive ditches were filled in.