Dozens of countries reached a climate change agreement in Warsaw on Saturday, overcoming a rift between developing and more established economies.

In the talks, fast-growing economies like China and India won more lenient climate change guidelines than the U.S. and European countries originally wanted.

Countries will now make “contributions” toward reducing emissions over the next two years, instead of “commitments,” after what media reports described as negotiations that helped drive the U.N. talks in Warsaw into an extra day.

Developing and developed countries have long been on different pages when it comes to tackling climate change.