David Armitage is Lloyd C. Blankfein Professor of History and Chair of the Department of History at Harvard University. His books include The History Manifesto (CUP, 2014), Foundations of Modern International Thought (CUP, 2013), The Declaration of Independence: A Global History (Harvard, 2007) and the prize-winning The Ideological Origins of the British Empire (CUP, 2000). He frequently appears on national radio and in the press, and tweets actively (@DavidRArmitage) to his more than 6000 followers.