Senator Bernie Sanders has quit the presidential race, clearing the way for Joe Biden to take on Donald Trump in the November election.
The two politicians, who had spent the last year battling for the Democratic nomination, appeared to put on a united front on Monday.
They appeared together by split-screen on Biden's livecast, where he appealed to all Americans to unite to defeat Trump.
Sanders urged the voters "to come together in this campaign to support (Biden's) candidacy, which I endorse, to make certain that we defeat somebody who I believe ... is the most dangerous president in the modern history of this country."
He put up a united front, telling voters that "it's imperative that all of us work together."
Before the Democratic primary contest was halted due to the pandemic, Biden had secured a commanding edge over Sanders.
Netanyahu orders deeper Israeli incursion into Lebanon
Blast in Myanmar village reportedly kills 55 and injures dozens more
US military says it turned away blockade runner trying to reach Iranian port
Two hundred hurt in post-game violence as Paris hails second Champions League triumph
Illegal mine collapses in China, killing five just days after Shanxi disaster
