Urban showed himself to be an adept and powerful cleric,
Wanting to reinforce the power of the papacy, Urban seized the opportunity to unite Christian Europe under him as he fought to take back the Holy Land from the Turks.
Urban denigrated the Muslims, exaggerating stories of their anti-Christian acts, and promised absolution and remission of sins for all who died in the service of Christ.
Historically, the Civil war was caused by the incompatibility between northern and southern wealth. The industrial revolution in the North caused machines to be built which relied on wage laborers and not slaves