America's empire expanded dramatically following the Spanish-American War of 1898. The United States quickly annexed the Philippines and Puerto Rico, seized control over Cuba and the Panama Canal Zone, and extended political and financial power throughout Latin America. This age of empire, Benjamin Allen Coates argues, was also an age of international law. Justifying America's empire with the language of law and civilization, international lawyers-serving simultaneously as academics, leaders of the legal profession, corporate attorneys, and high-ranking government officials-became central to...