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.

the topic i chose to write about was " why scuba diving is so popular". the topic is suitable for the audience because it is the easiest to develop and explain, it can be explained in a simpler more conversational manner, it does not require the use of too many technical words, and the final reason for selecting this topic is that it is the one most people can relate to, you might not know too much about scuba diving, but you could probably agree that it is very popular. the purpose of the writing about this topic is to convince more people about the benefits both for the body and the mind that   scuba diving can have on a person. it can you keep fit since it requires a lot of energy when swimming underwater; it also you relax because you forget about the world when you are underwater being mesmerized by the underwater world. i would write this paper in the summer, a perfect time to give scuba diving a try if a person has not done it yet.