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Pitt's Act was deemed a failure because it quickly became apparent that the boundaries between government control and the company's powers were nebulous and highly subjective. The government felt obliged to respond to humanitarian calls for better treatment of local peoples in British-occupied territories. Edmund Burke, a former East India Company shareholder and diplomat, was moved to address the situation and introduced a new Regulating Bill in 1783. The bill was defeated amid lobbying by company loyalists and accusations of nepotism in the bill's recommendations for the appointment of councillors.

what was the  name of the person who was once a large  shareholder in EIC and talk to the issues with with the new Regulating bill in 1793?
Edmund Burke