What do you believe to be the enduring qualities of the gettysburg address? why has this two-minute speech so endured?

which question?

explanation:

which question r u talking about?

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:

can you attach the answer options

food and resources were plentiful.

women were encouraged to marry later in life so they could work in factories.