Submitted on: 14 December 2015.
Revised on: 08 January 2016.
Accepted on: 10 February 2016.
___________________Britain and the World---EDINBURGH UNIV PRESS
http://reply.papertrans.cn/1/42/4171/4171-32.png
http://reply.papertrans.cn/1/42/4171/4171-33.png
Submitted on: 10 September 2016.
Revised on: 20 November 2016.
Accepted on: 13 January 2017.
___________________Britain and the World---EDINBURGH UNIV PRESS
http://reply.papertrans.cn/1/42/4171/4171-35.png
Submitted on: 16 March 2014.
Revised on: 17 June 2014.
Accepted on: 07 August 2014.
___________________Britain and the World---EDINBURGH UNIV PRESS