Answer:
If there were only 2 or 1 career(s) for 1 the globe wouldnt have advanced technology. For example if only mechanics and teachers were jobs than theres no point in being teacher your teaching kids to be 1 of 2 jobs, and we wouldnt have most things such as electricity because whos there to do that. Finally no agriculture, there will be no farmers so i guess you could say we'd die from starvation.
Explanation:
