Different interpretation from critics and the influence of the contexts in which they are written.The Worlds Wife is a poem collection by Carol Ann Duffy and Wide Sargasso Sea is a novel by Jean Rhys.
The basic guidance of the coursework is on page 11 of this:
http://www.ocr.org.uk/images/82538-unit-f664-texts-in-time-coursework-guide.pdfIn Wide Sargasso Sea: 3 main types of power: Marriage, empire and slavery.
In Worlds Wife: Men are more in power apart from few poem collection i.e salome.