Book excerpt: Revealed to contemporaries by the South African War, the basis on which the system would develop soon became the focus for debate. Commercial organizations, including newspaper combinations and news agencies such as Reuters, fought to protect their interests, while "constructive imperialists" attempted to enlist the power of the state to strengthen the system. Debate culminated in fierce controversies over state censorship and propaganda during and after World War I. Based on extensive archival research, this study addresses crucial themes, including the impact of empire on the press, Britain's imperial experience, and the idea of a "British world".