On Thursday, Queen Elizabeth II passed away at the age of 96.
She served on the throne for 70 years.
On Friday, King Charles III made his first public address to the world.
He mourned his late mother while promising to fulfill his duties as King.
On Saturday, he was officially proclaimed King in a televised ceremony.
It was the first time that the ceremony has ever been televised.
The King made a short speech before sitting down to sign the documents to officially become King.
Queen Consort Camilla and Prince William then signed the documents as witnesses.
“I shall strive to follow the inspiring example I have been set,” King Charles III said in his speech.