Essays / To what extent do you think that advertising shapes society? [4]

I have HW(essay) but couldn't begin nor find good support ideas.Whenever I try to write something,it goes like turtle and I can't expand my ides

my topic is 'to what extent do you think that advertising shapes society' ,If you help me,it will be nice for me because English is not my main language and I'm not good at writing especially academical writing.