Book excerpt: The A to Z of U.S. Diplomacy from the Civil War to World War I provides a convenient introduction to a critical period of American diplomacy. The half-century from 1861 to 1914 formed a crucial time in the development of the American approach to the world, for the United States laid the foundations for its 20th century foreign policy. While the famed Monroe Doctrine insisted that no foreign power meddle in the American continent, it did not stop the U.S. from waging war against Spain, mixing in conflicts in Cuba, Chile, and Mexico, nor in backing independence for Panama, all the while acquiring smaller Pacific islands. The book includes: o An introductory essay outlining main themes and problems of the era o A chronology of main events o Over 1,000 separate cross-referenced dictionary entries exploring all aspects of American Diplomacy o Appendixes providing lists of presidents; secretaries of state, war, and navy; all American diplomatic ministers and ambassadors, and most U.S. consuls o A photographic section with images of significant individuals and locations o A bibliography facilitating further research