What political reasons did president lincoln have for issuing the emancipation proclamation?

President Lincoln had many reasons for issuing the Emancipation Proclamation.  One reason was to recruit freed slaves into the Union army.  This way they could fight for their freedom literally.  Another was to take from the South, their main source of manpower.

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:

whose power in the senate is equal to the power of the speaker of the house?