Complex sentence: Also, it was planned to connect the AVUS to the growing Reichs-Autobahn network by extending it to the south, so the South Turn at Nikolassee was demolished and replaced by a junction.
Split into simpler sentences: Also, it was considered important to connect the AVUS to the growing Reichs-Autobahn network by extending it to the south. The South Turn at Nikolassee was demolished and replaced by a junction.