yes but it has to be an American visa.
no
If you are just going to visit him in the US, all you need is a visit visa (tourist visa) but if you are planning on making your home permanently there with him, he needs to apply for a K-3 spousal visa for you.
Yes the man from China will need a visa to visit the U.K.
you need the schengen visa
no
This visa is not necessary.
there is no visa for moroccans who want visit south korea
yes
Yes
yes
Yes.
Yes