Evolution of Hollywood Cinema

Given what youve    learned this term, would    you    say    that   
Hollywood Cinema,    has    significantly evolved overtime, or    has   
it remained prettyconsistent,in itspredominant narratives,   
genres, structural    conflicts,    ideologies,aesthetic approaches,   
and    engagement    with    prevailing    social and political    issues?       
If you    think its    changed,    then    how? If    you    think    it    hasnt   
changed,    but    rather has    remained    consistent, than why?

(Instruction in the pdf.)