The Canadian Parliament gave King Charles III a standing ovation after he sang the words of Canada's national anthem, "The True North, Strong and Free," at the end of his speech.
Charles III's visit was designed to show Canada's support in its standoff with US President Donald Trump.
Charles III, speaking on behalf of the government led by Prime Minister Mark Carney, pledged to defend Canadians' sovereign rights.
Carney invited Carl to Canada on a state visit after Trump launched a trade war with Ottawa and announced his intention to make Canada the 51st state of the United States.
The rhetoric has been met with a negative response in Canada. Trump's statements contributed to Carney's victory in the parliamentary elections, which was considered unlikely at the beginning of the year.