Crucible of Peace is about the least-studied of the United States’ founding documents: The Treaty of Paris (1783) that ended the American Revolutionary War. At the center of this story is a tension common to all treaties: between the terms imposed by treaty makers and the wishes of the people whom the treaty purported to bind. In 1783, this tension assumed particular urgency because the peace treaty was a treaty of partition that drew new, sometimes arbitrary lines through what had been unified British territory. The resulting upheaval produced two legacies. On one hand, it showed that the United States was a nation bound by the law of nations from the start. But Americans acquired a strong distrust of the treaty-making process. That legacy is with the republic to this day.