1991 Toyota Tercel not sure what it is

My car came to a hard stop on the highway going 30 just came of the off ramp after it stoped 30 mins later we could move it nothing would move before after we moved it it moved about 5 miles before it did it agin. The we wait till the next day we got it 40 mile by towing then it stoped and hasnt moved. We used a car dollly to get it to are house what could be wroung the tras seem to work braks are good could it be the trans axel