Which statement best describes the main idea behind abraham lincoln's emancipation proclamation?

a. it called for the abolition of african american slavery in warring states.
b. it outlined the strategies of the union army.
c. it listed the rationale behind the constitutional amendments proposed.

The correct answer is A. It called for the abolition of African American slavery in warring states.

Explanation

The Emancipation Proclamation is a document published by US President Abraham Lincoln during the American Civil War between the Union and the Confederate States. In this proclamation, President Lincoln declared that from January 1, 1863, slaves who lived in the Confederate states (where the civil war was taking place) would be free from that date. This further deepened the ideological gap between the southern (confederate) states and the Union's states in the civil war. Furthermore, this was a cause for slaves from the south to rebel against their masters and join the cause of the Union, to keep the country united. According to the above, que correct answer is A. It called for the abolition of African American slavery in warring states.

all of the choices are correct

bismarck believed in using force

is the correct answer!