And no country is contributing to Global Warming the way the US is. Most of the pollution in the "3rd world countries" is from the production of goods for the US (and allies), often by US companies operating on foreign soil to run around regulations..
Those countries choose to produce that stuff. The people there like the new higher paying jobs. It enables them to develop and raises living standards as has happened in India and China. They aren't innocent victims. And they do make choices as to how they want to allocate resources. China could be more environmentally conscious where it to stop increasing the size of it military and spend the money on green energy instead. And it's important to remember that there are many more environmentally safe technologies in 2016 than there were in the nineteenth century or in the 1950s - if you are building out an industrial infrastructure from scratch now it's much easier to be green than before. Solar electricity was not around 100 years ago.
And what would you have the US do about it? Raise tariffs on third world produced goods? Do you propose a 500% tariff on goods from China? I would remind you that bossing around third world countries is also rejected as neocolonialism.
And you seem to be ignoring the emissions released by burning forests in Indonesia and Brazil. The forest fires in Indonesia last year released 11.3 million tonnes of carbon per day, exceeding the daily rate of 8.9 million tonnes of carbon emissions from the whole of the European Union. Predictions for future deforestation in Central Africa estimate that by 2050 forest clearance in the Democratic Republic of the Congo (DRC) will release a total of up to 34.4 billion tonnes of CO2, roughly equivalent to the UK’s CO2 emissions over the last sixty years.
But that doesn't fit into a convenient narrative of blaming the West, does it?