USA HISTORY

Detailed explanation-1: -Barack Obama was the first African American and first biracial president of the United States, being elected in the 2008 election and re-elected in the 2012 election.

Detailed explanation-2: -A member of the Democratic Party, he was the first African-American president of the United States. Obama previously served as a U.S. senator from Illinois from 2005 to 2008 and as an Illinois state senator from 1997 to 2004, and previously worked as a civil rights lawyer before entering politics.

Detailed explanation-3: -The Democratic ticket of Barack Obama, the junior senator from Illinois, and Joe Biden, the senior senator from Delaware, defeated the Republican ticket of John McCain, the senior senator from Arizona, and Sarah Palin, the governor of Alaska.

Detailed explanation-4: -Democrat Barack Obama wins the 2008 United States presidential election after beating Republican John McCain, becoming the first African American to be elected to the office of President of the United States.

Detailed explanation-5: -On November 4, 2008, Barack Obama became the first African American to be elected President of the United States, sparking many celebrations in the United States and around the world. He gained almost 53% of the popular vote and 365 electoral votes.