Complex sentence: Similarly at around this time came the Environmental Impact Assessments (EIA), a reaction to the social push from the sixties Green movements, the methodology of both of these impact assessments acted as precursors to the creation of the PIA.
Split into simpler sentences: Similarly at around this time came the Environmental Impact Assessments (EIA), a reaction to the social push from the sixties Green movements. The methodology of both of these impact assessments acted as precursors to the creation of the PIA.