By the time civil war erupted in 1861, the revival and reform movements of the antebellum period had made an indelible mark on the American landscape. The Second Great Awakening ignited Protestant spirits by connecting evangelical Christians in national networks of faith. Social reform spurred members of the middle class to promote national morality and the public good. Not all reform projects were equally successful, however. While the temperance movement made substantial inroads against the excesses of alcohol consumption, the abolitionist movement proved so divisive that it paved the way for sectional crisis. Yet participation in reform movements, regardless of their ultimate success, encouraged many Americans to see themselves in new ways. Black activists became a powerful voice in antislavery societies, for example, developing domestic and transnational connections to pursue the cause of liberty. Middle-class women’s dominant presence in the benevolent empire encouraged them to pursue a full-fledged women’s right movement that has lasted in various forms up through the present day. In their efforts to make the United States a more virtuous and moral nation, nineteenth-century reform activists developed cultural and institutional foundations for social change that have continued to reverberate through the twentieth and twenty-first centuries.