Complex sentence: The 1960s saw several European auto-makers, including Ford of Britain, investing in new assembly plants on Greenfield sites: the Dagenham plant was by 1970 becoming one of the Europe's older mass-production car plants.
Split into simpler sentences: The 1960s saw several European auto-makers, including Ford of Britain, investing in new assembly plants on Greenfield sites. The Dagenham plant was by 1970 becoming one of the Europe's older mass-production car plants.