Who is Janet Rosenberg Jagan and what great work did she do for Guyana. (80 word paragraph explanation)

Why do all market economies have taxes to support armed forces police forces public schools and at least some form of public transportation?

What choices did the family of emmett till and their supporters make in exposing the brutality of his murder? how did these choices shape public reaction to the murder?

How has mexico's culture been shaped by cooperation among different people? be sure to name the groups involved in the cooperation, describe the cooperation, and explain how the cooperation shaped mexico's culture