What Namier did was to cut a cross-section through the British political system in the middle of the eighteenth century and demonstrate that no such parties existed. Trevelyan, and popularised in Sir Charles Grant Robertson's textbook England under the Hanoverians, reprinted sixteen times since 1911. That was the classic 'Whig interpretation' of history for the period, embodied in the scholarly work of Lord Macaulay, W.E.H. Prior to 1929 British political history from 1688 was broadly conceived of as a two-party rivalry of Whig and Tory, underpinning a constitutional monarchy and a modern cabinet system based on a party majority in the House of Commons. The publication of what is often known simply as The Structure of Politics transformed the perceived political landscape of eighteenth-century Britain.