Really Need help pls

You learned in this lesson that the mythical trojan war was instrumental in forming greek culture. it has been said that there were no real "greeks" before this, just relatively unconnected kingdoms in the land that would later be called greece. how did the story of the war "make" greek culture? select all that apply. it provided something for all greeks to talk about. it gave greeks a common history. it represented a moment when the different kingdoms came together for a common cause, unifying the different kingdoms into one greece. it showed how agamemnon conquered the lesser kingdoms and unified them under his rule.

Pls, i really need on this question?

Identify the sentence in which the underlined word or words are punctuated incorrectly. a) pam was (well prepared) for the debate. b) she had (read three quarters) of the material more than once. c) she has always been (self assured). d) the winner needs a (two-thirds) majority of the votes.