“…Besides economic growth, factors influencing the pollution level include, among others, institutional quality and democracy ( Tamazain and Rao, 2010 ; You et al., 2015 ), financial development ( Nasir et al., 2019 , Pham et al. 2020 ), trade measures such as trade openness and FDI ( Hille and Shahbaz, 2019 ; Hille et al., 2019 ), urbanization ( Pham et al., 2020 ), transportation ( Nassani et al., 2017 ), general as well as energy innovations ( Shahbaz et al., 2018a ; Yang et al., 2014 ), and government environmental expenditures ( Hille and Lambernd, 2020 ). Although existing studies also treated financial development as an important determinant in pollution modelling, ambiguous results are reported ( Zaidi et al., 2019 ).…”