3. The sandwich rate went waaaayyyyy up
Europe would be in contact with lost knowledge sooner that in reality happened. As the arab nations were more civilized than some others, the cities were preserved and the really important work of the romans would be preserved and enhanced. The gods statues were destroyed and Islam would be the only religion.
Propaganda isn't always 100% true, so your answer would be false.
Getting a job right after high school sounds like a good idea, however, you are limited to certain low-paying to medium-paying jobs, and it is mostly manual working jobs.
hope this helps