What created the first ribosome
This is one of the "chichen and the egg" quesitons about early origins of life. The answer is: we don't know. There is a RNA world hypothesis which suggests that RNAs were the primary versatile biomolecules before proteins. This idea stems from the fact that there are self-replicating RNAs and ribozymes (RNA-based enzymes). Also, the fact that the catalytic center  (peptidyl transferase) of the ribosome is RNA, is also used in support of the the RNA world. However, this is still an idea and we cannot conclusively say that an RNA-world existed.