truck wont start on 1998 Mazda B2500

I was driving down the rode 30-35 mph truck shut down and wont start it has fuel,the fuel pump is working and I checked the fuses all good.any ideas please help also I noticed the oil was at the low end of the operating range but added oil and still no start????

Asked by for the 1998 Mazda B2500
If you verified fuel is ok - you will need to check for spark. That would be the next natural progression in testing.