Holger Droessler is a historian of 19th- and 20th-century U.S. history, with a special focus on imperialism, capitalism, and the Pacific Ocean. His first book manuscript, "Coconut Colonialism: Workers and the Globalization of Samoa," argues that the globalization of Samoa at the turn of the 20th century was driven by a diverse group of working people on and off the islands. Currently, he is doing research for a second book manuscript, "War Workers," which tells the global story of non-citizen civilians working for the U.S. military from the Civil War to Iraq. He has published on a variety of topics, including labor history, Pacific history, environmental history, and global Hiphop. His teaching ranges from modern U.S. history in global perspective to the history of capitalism and environmental history.