Because Ubaid, Sumer, Akkad, Assyria and Babylon civilizations all emerged around the Tigris-Euphrates, the theory that Mesopotamia is the cradle of civilization is widely accepted.
If you Google for washington monument height, the first listing you see is for a page about the monument at greatbuildings.com. Note that the page mentions that the monument has a base of 55 feet and a height of 555 feet, in keeping with what they call the standard Egyptian proportion of 10:1 height to base.
You see, some brainless super mutant thought it would be funny to shoot at the shiny round thing on the Washington Monument. The Washington Monument is a large, pre-War obelisk at the center of the National Mall in Washington, D.C. It is a United States Presidential Memorial constructed to honor George Washington.he Washington Monument is a memorial completed on December 6th, 1884, commemorating the first President of the United States, George Washington.