The reason so many nations support the Paris Agreement is that they are going to be huge beneficiaries of the Paris Agreement.
Eleven of the OCED nations are supposed to pay $100 billion a year to about 200 other nations.
No wonder those 200 nations are in such agreement.
Even China, who has to do nothing before 2030 to reduce carbon dioxide emissions, will get a slice of welfare money!
China also manufactures lots of the solar cells and windmill machines that will be given to the 200 'welfare' nations!