Are unequal countries less likely to expand carbon taxation?

Are unequal countries less likely to expand carbon taxation?

I have written the literature part but need the empirical analysis and data and methodology added to it.
Th use of regression to showcase how unequal countries are unable to expand carbon tax is needed. As well as graphs and tables of empirical data. An analysis of data is required too.
I have readings and data sources that can be used so please contact me to send you everything