Answer:
The largest empire in history is the British Empire, which at its peak in the early 20th century, spanned over a quarter of the world's land surface, including territories in North America, Africa, Asia, Australia, and New Zealand. The British Empire was also the world's largest empire in terms of population, with an estimated population of over 400 million people at its height. The empire began to decline after World War I, and most of its colonies gained independence in the years following World War II.
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