I think it's important because scientists need to be able to communicate.
Think about why you write a lab report. When we write lab reports, we are effectively communicating how we did our experiment, our results, and what we think about those results.
We need to have transparency and be able to replicate results in order to know if they are accurate to our hypothesis. Theories are not 100% proven. We only know what we are able to observe and all measurements have their limitations.
Based on the fact that Charleston Mercury was a southern sympathizer, the editor most likely chooses the name "War of Southern Independence" for the US Civil War.
The Mexican American War heightened tensions over slavery in that there were many disagreements over whether the new territories won from Mexico should be free or slave territories. The Wilmot Proviso, created to solve the problem, ended up slitting parties on regional areas.
Good luck :)
