What key political decision made by abraham lincoln change the nature of the war in the unions favor?

The Emancipation Proclamation.

It changed the Union's goals and purpose for fighting the war. Their new goal is to free the slaves.

The correct answer is issuing the Emancipation Proclamation.

The Emancipation Proclamation became law on January 1, 1863. The goal of this law was to free slaves within the "rebellious states" (aka the Confederacy). Even though this doesn't technically free slaves since the Confederacy no longer followed the laws put in place by the Union, it turns the tide in the war. This war is no longer about preserving the Union. Rather, the goal of this war is to free slaves and end the institution that helpd spark this Civil War. This allowed thousands of slaves who escaped the Confederacy to join the Union army.

1) checks and balances- this idea is implemented in the constitution to ensure that no one branch of the federal government gains too much power. for example, the legislative branch(congress) can approve a bill that will then be sent to the executive branch (president). if the president does not like the bill or thinks that it violates the rights of citizens, he/she can veto the bill. vetoing the bill stops the bill from becoming a law. this check on power ensures that congress makes laws that do not violate the rights of citizens.

2) anti-federalists do not want to ratify the constitution unless it includes a bill of rights. the anti-federalists are worried that the constitution gives too much power to the federal government. having a strong central government caused problems when the us was still part of great britain. this is why the anti-federalists are fearful of this type of system.

3) federalists want a new constitution passed because it will fix america's weak political structure. before the us constitution is implemented, the constitution being used is known as the articles of confederation. this constitution has an extremely weak central government, allowing for disunity among the states.

can't do the whole thing, hope this

bujías y una hora antes y no me parece muy difícil