How did the emancipation proclamation support the union’s military cause?

It proclaimed the freedom of slaves in the ten confederate states and it also decreed that freed slaves could be enlisted in the Union Army.

Explanation:

Emancipation Proclamation completely changed the meaning and purpose of civil war. The Emancipation Proclamation was an executive order issued by Abraham Lincoln on January 1, 1863.

In the next 2 and half years around 180,000 of them fought in the Union army and 10,000 in the navy, making a vital contribution to Union victory as well as their own freedom.

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!