As the King's confidence in Carvalho e Melo increased, the King entrusted him with more control of the state. By 1755, Sebastião José de Carvalho e Melo was made Prime Minister. Impressed by British economic success that he had witnessed from his time as an Ambassador, he successfully implemented similar economic policies in Portugal. He abolished slavery in mainland Portugal and in the Portuguese colonies in India, reorganized the army and the navy, restructured the University of Coimbra, and ended legal discrimination against different Christian sects in Portugal by abolishing the distinction between Old and New Christians.