At the outset of the civil war, which statement is false?
a. the north had to deal with extended supply lines.
b. the south had a valuable export, cotton.
c. the south had a better rail system for the transportation of war materiel and personnel.
d. the south was more dependent on imports.
e. the north had more manufacturing.

c. The South had a better rail system for the transportation of war materiel and personnel.

Explanation:

The South had virtually almost no rail system, while the north had a extended rail system to use to transport their larger quantity of troops, supplies, and war materials.

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option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.