William Pitt the Younger however, was comfortable with Shelburne, and thus joined his government; he was appointed Chancellor of the Exchequer. Fox, who became Pitt's lifelong political rival, then joined a coalition with Lord North, with whom he collaborated to bring about the defeat of the Shelburne administration. When Lord Shelburne resigned in 1783, King George III, who despised Fox, offered to appoint Pitt to the office of prime minister. But Pitt wisely declined, for he knew he would be incapable of securing the support of the House of Commons. The Fox–North coalition rose to power in a government nominally headed by William Cavendish-Bentinck,
William Pitt the Younger part due to the long campaigning Pitt had encouraged with his friend William Wilberforce. Hague goes on to note that the failure was likely due to Pitt being a "spent force" by the time favourable conditions had arisen. In Hague's opinion, Pitt's long premiership, "tested the natural limits of how long it is possible to be at the top. From 1783 to 1792, he faced each fresh challenge with brilliance; from 1793 he showed determination but sometimes faltered; and from 1804 he was worn down by ... the combination of a narrow majority and war". Historian Marie Peters has compared