Who was reining in Britain when the British Empire grew to be the world's largest empire, with an estimated population of more than 400 million people?

• Elizabeth I
• Queen Anne
• Queen Victoria
  Explanation:

  "Queen Victoria became queen of the UK, during the Victorian period, the British Empire grew to cover all of India, Australia and large parts of Africa. It became the largest empire the world has ever seen, with an estimated population of more than 400 million people."
• Henry VIII