Complex sentence: With financial support from Phonogram in the US, it was able to undertake a multi-date tour to promote the "Autobahn" album., a tour which took them to the US, Canada and the UK for the first time.
Split into simpler sentences: With financial support from Phonogram in the US, it was able to undertake a multi-date tour to promote the "Autobahn" album. This tour took them to the US, Canada and the UK for the first time.