What is the signifacance of the battle of resaca,ga

One thing that would be significant is that there were an awful lot of casualties in a short amount of time.

If you read and study the information on the following links, I am sure that you will learn what other significances there were.

Resaca (http://darrellryan.homestead.com/Resaca.html)

The Battle of Resaca, Georgia (http://ngeorgia.com/history/resaca.html)

Friends of Resaca Battlefield HomePage (http://www.resacabattlefield.org/FoRstart.html)