This volume differs from many quincentennial discussions of the Protestant Reformation--and ecumenical scholarship more generally--in that it shifts the focus from Europe and the West to the global South, where ecumenism's promises and challenges are quite different. In postcolonial and post-missionary Africa, the churches continue to expand, competition among denominations is lively, and Christian rivalry with Islam is often a reality. In Latin America, Protestants have severely eroded the Catholic Church's hegemony, originally forged in the zeal of the Counter-Reformation to combat the perceived errors of Luther and Calvin. In India, the Christian churches are a tiny, beleaguered minority facing an increasingly militant Hindu nationalism. These essays pay close attention to the different contexts of intra-Christian relationships worldwide--the actual situation on the ground. If ecumenism will succeed, it cannot be simply a matter of experts at a conference attempting to agree about doctrines abstracted from the