Morocco Remains Independent Up To World War I

  It would depend on the exact circumstances but barring radical changes I doubt that Morocco would ally with the CP as it would be too vulnerable and isolated.  Its a long way away from Germany and can be attacked by sea or overland from French Algeria, which has large forces deployed there.  Far more likely it hunkers down to avoid being dragged into the chaos and destruction.  Possibly some limited aid to the allies to try and gain some goodwill and hence possible protection, once it decides those powers are likely to win but can't really see anything else.

Also, out of curiosity--how would Moroccan life, culture, politics, et cetera develop without almost half a century of French rule?

Indeed, any thoughts on this?

  Yes.  I think its the only Arab monarchy left west of the Jordan-Saudi-Gulf region.  It was a monarchy throughout the French protectorate.

  I'm not sure how it viewed the German behaviour which led to the two Moroccoian crisis but once Germany was defeated in WWI it didn't have any real influence.  At least before the rise of Hitler and I doubt it would have been significant before the fall of France.  If this still occurs you have a basically neutral Morocco alongside Vichy France and its possible that Hitler might seek to obtain basing rights there.  Which could make the U boat threat markedly more dangerous.  And/or prompt an earlier invasion of Morocco by Britain although how practical that would have been depending on the circumstances.

  Of course there is one other potentially important butterfly I can think of.  If Morocco is fully independent of France there is no basis for its northern section to become a Spanish protectorate - basically to prevent France controlling the southern part of the strait of Gibraltar.  This is likely to impact on Spanish history as they would avoid the Rif war, see en.wikipedia.org/wiki/Rif_War which prompted a coup in 1923.  Furthermore without this territory and the forces based here Franco's coup that started the Spanish civil war in 1936 is also a lot harder.  So you might see a royalist or even communist Spain resulting depending on events.

Perhaps. If it goes Communist, expect Hitler to be very aggressive against it, perhaps not invading but supporting rebels. The Soviet Union could be using them as a puppet in the war, and maybe a Cold War.

The Nazis would likely have the help of Vichy France, at least to keep France occupied.