What is the author's style in The Path Between the Seas by David McCullough?

The Path Between the Seas consists of a preface, three books, and an afterword. Book 1, "The Vision, 1870-1894," consists of 8 chapters, covering the massive work done by the French, which leads to technological defeat. Book 2, "Stars and Stripes Forever, 1890-1904," consists of 6 chapters, concentrates on how the Americans take over the project of linking the oceans, debate whether the French site is optimal, and create the Republic of Panama. Book 3, "The Builders, 1904-1914," consisting of 7 chapters, chronicles the American effort through its challenges and setbacks to ultimate success.