Why is King Charles in Canada, and what is the throne speech?

On Tuesday, the parliament in Ottawa will be opened by a monarch for the first time in decades.

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He is due to deliver the Speech from the Throne to open the 45th session of Canada's parliament in Ottawa on Tuesday.

The King is the head of state of Canada - and of 13 other Commonwealth realms such as Australia, New Zealand and several Caribbean states - as well as the UK.

The King, who has travelled with Queen Camilla, previously journeyed to Canada several times as the Prince of Wales. This is his 20th visit.

Tuesday's address would traditionally be given by the governor general, who is the monarch's top representative in Canada. They read it on behalf of the prime minister, to set out the government's agenda when a new parliamentary session is about to begin.