"Amy Greenberg's fascinating account casts new light on Manifest Destiny expansionism by showing how martial conceptions of manhood animated the enthusiasm for territorial annexation in the 1850s. Filibustering, she finds, stemmed not only from economic and political ambitions but from widespread male desires for adventure and romance. Although more restrained visions of manhood also influenced expansionist ambitions, particularly in Hawaii, Greenberg demonstrates that aggressive conceptions of manhood shaped foreign relations long before Theodore Roosevelt rallied the Rough Riders." -Kristin Hoganson, University of Illinois, Urbana-Champaign