The San Francisco Golden Gate bridge is a geographic characteristic of human type. The reason why it falls into the category of human characteristics is that it is a feature that has been made by the humans. This type of geographical characteristics are also known by the term anthropogenic. In the past several thousand years, the humans have been developing very quickly, and that has lead to lot of building and re-shaping of the landscape, making the human characteristics to become more and more dominant across the planet.
Many people believe that the roman empire fell due to a couple of economic issues, as well as Germanic invasion, and the Empire being split between east and west.
