Britain’s King Charles III on Saturday congratulated President Donald Trump and the American people on the 250th anniversary of U.S. independence.

The monarch praised the close partnership forged between the two nations despite their turbulent beginnings.

“This year marks a truly historic milestone and a moment of great celebration for Americans everywhere.

“It offers an opportunity to pause and reflect on the remarkable journey of the United States over the past two and a half centuries, and to honour all that has been achieved since 1776,” the monarch wrote in his message.

The U.S. is celebrating 250 years since the 13 colonies declared independence from Britain, triggering the revolutionary war that ended with London recognising U.S. sovereignty in 1783.

The former adversaries later forged what became known as the “special relationship.’’

King Charles described the ties between Britain and the United States as a story of “extraordinary evolution”, from overcoming conflict to forging one of the closest and most productive alliances the world has seen.

“Together, we face the challenges of today, and the opportunities of tomorrow,’’ he wrote, adding that he had no doubt the two countries would continue to defend their shared values over the next 250 years.

As an example, the monarch pointed to the responsibility to protect nature, an issue that has long been central to the king’s public work.

In April, the king and his wife, Queen Camilla, made a multi-day state visit to the United States, where they were received by the president at the White House.

The trip came at a time when relations between the two countries had been strained by issues, including the war involving Iran, making the visit a delicate diplomatic balancing act for the monarch.

Mr Trump subsequently praised the monarch in glowing terms.

(dpa/NAN)