Complex sentence: The territory around Bauska was originally inhabitted by Semigallian tribes, however in the mid- 1400s, Bauska castle was built by the Livonian Order The present day city started developing only around 1580, recieving its city rights in 1609.
Split into simpler sentences: The territory around Bauska was originally inhabitted by Semigallian tribes. Today's city, however, started developing only around 1580, recieving its city rights in 1609.