THE SUN NEVER SETS

"The empire on which the sun never sets". This sentence is used to describe extensive dominion of the British Empire in 1815. Then, the British Empire had fifteen settltments. They were Canada, United States, India & Ceylon, Australia, New Zealand, West Indies, South America, Europe, Middle East, East Asia, Sub-Saharan Africa, South Africa. Population of the British Empire was account for 25% in Population of the world.Dominion area was 30million square kilometer. It was a very famous age. However, It is downfall, now. I am interest in why the British Empire changed downfall. The history of  human civilizationIn appeared many Empires in this world. They are all downfall. Why are they can not keep powerfully. Maybe cause of  politics or be conceited or the other country invaded them. I wanted to find out in the next week.