Who was the 46th president of the united state and how did he become president
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Joseph R Biden Jr

Explanation:

He was elected to the New Castle County Council in 1970 and became the sixth-youngest senator in U.S. history after he was elected to the United States Senate from Delaware in 1972, at age 29. Biden was the chair or ranking member of the Senate Foreign Relations Committee for 12 years and was influential in foreign affairs during Obama's presidency. He also chaired the Senate Judiciary Committee from 1987 to 1995, dealing with drug policy, crime prevention, and civil liberties issues; led the effort to pass the Violent Crime Control and Law Enforcement Act and the Violence Against Women Act; and oversaw six U.S. Supreme Court confirmation hearings, including the contentious hearings for Robert Bork and Clarence Thomas. He ran unsuccessfully for the Democratic presidential nomination in 1988 and 2008. Biden was reelected to the Senate six times and was the fourth-most senior sitting senator at the time when he became Obama's vice president after they won the 2008 presidential election, defeating John McCain and his running mate Sarah Palin.

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