Which president was in office before Donald Trump?

The correct answer is Barack Obama, who served as the 44th President of the United States from January 20, 2009, to January 20, 2017. His presidency was noted for several significant domestic and foreign policy achievements, including the Affordable Care Act, the Dodd-Frank financial regulatory reform, and efforts to address climate change, among others. Obama was succeeded by Donald Trump, who took office on January 20, 2017.

Understanding the sequence of U.S. presidencies is essential for grasping the political landscape and policy shifts that occur with each administration.