 Complete the following phrase:  Paroled, he returned to Britain and pursued a political career as a Whig. A supporter of the Hanoverian Succession he was rewarded with office by George I in 1714. As Southern Secretary he oversaw the negotiation of an Anglo-French Alliance. Emerging as the domit figure in government after 1717, following the Whig Split, he led Britain to success in a new Spanish War and suppressed a 