The Paris Agreement is a landmark international treaty aimed at reducing global greenhouse gas emissions and addressing climate change. It was first signed on April 22, 2016, at the United Nations Headquarters in New York City.

However, the agreement was not officially entered into force until November 4, 2016, after it was ratified by at least 55 countries that account for at least 55% of global greenhouse gas emissions.

So, in which country was the Paris Agreement signed? The answer is France.

The French government played a crucial role in organizing and hosting the 2015 United Nations Climate Change Conference, also known as COP21, in Paris. The conference brought together representatives from 196 countries to negotiate and reach a consensus on the Paris Agreement.

After two weeks of negotiations, on December 12, 2015, the Paris Agreement was adopted by consensus by all participating countries. Representatives from 175 countries signed the agreement on April 22, 2016, including United States President Barack Obama and Chinese President Xi Jinping.

The Paris Agreement represents a significant step forward in the global fight against climate change, as it sets clear goals for limiting global temperature rises, encouraging countries to shift toward renewable energy and other low-carbon technologies, and providing financial support to developing countries to help them transition to a more sustainable future.

In conclusion, the Paris Agreement was signed in France, at the United Nations Headquarters in New York City, on April 22, 2016.