Barack Obama made history as the first African-American president when he became the 44th president of the United States.
His win in the 2009 election was huge for a country with a long history of racial issues, showing a big change in American politics.
During his time in office, the US got through an economic crisis and saw some financial growth. Obama promised big changes but played it safe by listening to his team and avoiding big risks.
People criticized him for being too careful, but it worked out in the end. Early on, he even won the Nobel Peace Prize.
