My 97 jeep wrangler turns over but wont start . the battery if goon the starter is only 1 year old. it was turning fine until i cleaned all the cables. i did this because my battery had a poor connection

U should try to follow the positive cable back to ecu and make sure u did not loosen the wire accidently by pulling
wiggle them around and see if they are loose this should be were the prob. lies...

Turning over is starting. It sounds like it's cranking but not starting - is that right?
You mentioned "it was turning fine until i cleaned all the cables."
Start there with the cables you cleaned. What did you use to clean them? Check you ground to both the starter and frame.
When you pull the clamps off the battery posts, do you get any spark?
How about pulling the ignition wire off the plug, and leave it close to the valve cover where you can see the end. Does it spark when cranking? Do you smell fuel if you pull the spark plug out?
The old expression - All you need is fuel and spark to make fire...
If it's a manual transmission, have you tried bump-starting it on a downhill?