Not everyone agrees that the USA should be classed as an empire. But in the late 1800s, after white settlers had colonised western states, America turned to acquiring overseas territories in what could be described as an imperial project. And one surprising commodity catalysed the project… bird poo. Joining Anita and William to answer questions like “how did shit shape the American empire?” and more, is Daniel Immerwahr, author of How To Hide An Empire.  Twitter: @Empirepoduk Email: empirepoduk@gmail.com Goalhangerpodcasts.com Assistant Producer: Anouska Lewis Producer: Callum Hill Exec Producer: Neil Fearn Learn more about your ad choices. Visit podcastchoices.com/adchoices