In Chapter 2, you will expand and develop the review you presented in your Chapter 1 Introduction. The review can include:

Overview of the topics included in the review.
Justification of the criteria for what is included and excluded as part of the review.
Identification of what has been done before including the strengths and weaknesses of existing studies.
Identification of the gaps in the literature.
Analysis of research methods that are used in similar studies and determine whether these methods were valid and reliable.
Synthesis of the literature and present it in a way that helps the reader gain a new perspective on the literature.
Summary of the chapter