Complex sentence: In 1860 Regensburg was connected to Passau, in 1873 a direct line to Nuremberg was opened and this was followed by a connection to Ingolstadt in 1874.
Split into simpler sentences: In 1860 Regensburg was connected to Passau. In 1873 a direct line to Nuremberg was opened, followed by a connection to Ingolstadt in 1874.