Queen Elizabeth II reigned for 70 years after her death at the age of 96.
Her family gathered at her Scottish estate to check on her.
Social change was witnessed by the Queen when she came to the throne.
Charles will become the new King and head of state for 14 Commonwealth realms after his mother's death.
Buckingham Palace said that the Queen died peacefully today.
The king and queen will return to london tomorrow.
After doctors put the Queen under medical supervision, all of the Queen's children traveled to Balmoral.
Prince William is going with his brother, Prince Harry.
The transition from empire to Commonwealth, the end of the Cold War and the UK's entry into the European Union were all part of Queen Elizabeth II's tenure as head of state.
Her reign began with the birth of the first prime minister, in 1874, and ended with the death of the last prime minister, in 1975.
Her prime minister had weekly audiences with her.
Crowds waiting for news on the Queen's condition began to cry as they heard of her death.
On April 21, 1926, the Queen was born.
Edward VIII abdicated from the throne in 1936 to marry the twice-divorced American, Wallis Simpson.
Lilibet became the heir to the throne when she was 10 years old.
Britain was at war with Germany within 3 years. Elizabeth and Princess Margaret spent a lot of their time at Windsor Castle after their parents refused to let them go to Canada.
After graduating from high school, Elizabeth joined the auxiliary Territorial Service and learned how to drive and repair cars. She realized that the esprit de corps flourishes in the face of adversity.
She exchanged letters with her third cousin who was in the Royal Navy. The prince took the title of Duke of Edinburgh after they wed at the abbey.
She described him as her strength and stay through 74 years of marriage before he died.