Review of 5 theories of justice

Write a one page review of each of the following theories of justice: John Rawls’s Justice as Fairness; Amartya Sen’s capabilities approach; Martha Nussbaum’s capabilities approach; Robert Nozick’s Libertarian theory; and Michael Walzer’s spheres of justice. (5 reviews total)

A review consists of a brief summary of the theory’s central thesis/argument and a critical evaluation of it. Each review consists of thoughtful responses to the following questions:
a. What are the main ideas?
b. What are the key concepts and how are they defined and
c. What are the main supporting arguments for these ideas articulated by the authors?