Hey I need help it's 3 Questions

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

What are the relation of community dynamics and community action to applied social sciences?

Which statement about jews is not correct? question 6 options: a: jews had been disliked and persecuted for many centuries. b: jews lived and worked in businesses throughout germany. c: many germans blamed jews for germany’s economic problems. d: jews began migrating to germany after the end of world war i.