The oil sands. Global warming. The National Energy Program. Though these seem like modern Canadian subjects, author Mary Janigan reveals them to be a legacy of longstanding regional rivalry. Something of a "Third Solitude" since entering Confederation, the West has long been overshadowed by Canada's other great national debate: but as the conflict over natural resources and their effect on climate change heats up, 150 years of antipathy are coming to a head. Janigan takes readers back to a pivotal moment in 1918, when Canada's western premiers descended on Ottawa determined to control their own future—and as Margaret MacMillan did in Paris 1919, she deftly illustrates how the results reverberate to this day.