Which of these was a characteristic of the south that contributed to its military strength in the early part of the civil war?

Many of the officers of the South were decorated veterans of past wars.  They were also daring men and brave men who were willing to go head first into battle to defeat their enemies.  Their soldiers were men who were accustomed to outdoor life and were also experienced in conflicts. They were dedicated to defending their states and their commitment was deep.

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: