Which country withdrew from the Paris Climate Agreement in 2020 only to rejoin it in 2021?
Show Hint
For international environmental agreements:
\begin{itemize}
\item Remember major global climate treaties,
\item Track withdrawal and rejoining of countries,
\item Focus on timeline-based current affairs.
\end{itemize}
Step 1: The Paris Climate Agreement is a global treaty aimed at combating climate change and limiting global warming.
Step 2: The United States officially withdrew from the agreement in 2020.
Step 3: In 2021, the United States rejoined the Paris Climate Agreement under a new administration.
Step 4: Hence, the correct answer is USA.