What specific language in the document indicates that the freedom of slaves is for moral reasons? (the emancipation proclamation)

One of the main reasons why the Emancipation Proclamation is considered a moral document is because of the reasoning it employs to justify the end of slavery. The Emancipation Proclamation states that slaves deserve their freedom simply because they are human beings and all humans have the right to be free. This is an argument that now forms the basis of doctrines such as that of universal human rights.

americans had many intangible advantages. well since the british fought a war far from home military orders, troops, and supplies sometimes took months to reach their destinations, and the british had an extremely difficult objective. they had to persuade the americans to give up their claims of independence, americans had a grand cause: fighting for their rights, their independence and their liberty. this cause is much more just than waging a war to deny independence.

whats the question? im not quite understanding your question.