The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom and its predecessor states.
412 million people
At its height, it was the largest empire in history and, for over a century, was the foremost global power.[1] By 1913, the British Empire held sway over 412 million people, 23% of the world population at the time,[2] and by 1920, it covered 35,500,000 km2 (13,700,000 sq mi),[3] 24% of the Earth's total land area.[4]

Age of Discovery
During the Age of Discovery in the 15th and 16th centuries, Portugal and Spain pioneered European exploration of the globe, and in the process established large overseas empires.