Part of the Success in Prolonging the Civil War Was

Part of the success in prolonging the Civil War was the practice of

A) the South engaging only in defensive warfare 90 percent of the time.
B) the North's reluctance to be too successful lest England and France
Become involved.
C) the North's geographic vulnerabilities to invasion.
D) the lack of bridges and roads in the South.
E) the inability of the North to find a competent commander.