Key leaders included Conservatives Benjamin Disraeli, and Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, and Liberals William Ewart Gladstone, the Earl of Rosebery and William Harcourt. They introduced various reforms aimed at strengthening the political autonomy of large industrial cities and increasing British involvement in the international stage. Labour movements were recognised and integrated in order to combat extremism. Both Queen Victoria and Prince Albert favoured moderate improvements to conditions of workers. Queen Victoria found in Disraeli a trustworthy adviser. She approved of his policies which helped elevated Britain's status to global superpower. In her later years, her popularity soared as she became a symbol of the British Empire. The major new policies included rapid succession, the complete abolition of slavery in the West Indies and African possessions, the end of transportation of convicts to Australia, loosening restrictions on colonial trade, and introducing responsible government.