What is a world war and how many world wars have happened so far?
World war is an international conflict that involves most major countries. There have been 2 world wars so far.
<START_INST>What is a world war and how many world wars have happened so far?<END_INST><START_CTX><END_CTX><START_A>World war is an international conflict that involves most major countries. There have been 2 world wars so far.<END_A>