World politicians have sent in messages of comfort to the British Royal family and citizens after the announcement of Queen Elizabeth II passing on Thursday, September 8, by Buckingham Palace.

The President and First Lady of the US, Joe and Jill Biden released a joint statement appreciating the Monarch’s 70-year rule, saying she was more than a monarch and defined an era.

"Queen Elizabeth II was a stateswoman of unmatched dignity and constancy who deepened the bedrock Alliance between the United Kingdom and the United States. She helped make our relationship special,” read the statement.

The Bidens added that Elizabeth II stood with their country during their darkest days after 9/11, "when she poignantly reminded us that ‘Grief is the price we pay for love.”

Barack and Michelle Obama have also released a joint statement, saying they are grateful to have witnessed "Her Majesty’s dedicated leadership”.

"We are awed by her legacy of tireless, dignified public service. Our thoughts are with her family and the people of the United Kingdom at this difficult time,” they said.

Antonio Guterres, the Secretary General of the United Nations said Elizabeth II was a "good friend” of the UN, and that she visited the New York Headquarters twice.

"She was deeply committed to many charitable and environmental causes and spoke movingly to delegates at the COP26 climate talks in Glasgow,” Guterres said.

Tanzanian President, Samia Suluhu, also mourned the late monarch, saying she will be remembered around the world as a pillar of strength, peace, unity and stability.

"On behalf of all Tanzanians, I send my sincere condolences to the Royal Family and the British people,” Suluhu tweeted.

Mourning the late Queen is not limited to politicians. #QueenElizabeth is trending on Twitter, with people from different walks sending in their condolences a few hours after her death was announced.