They believed that the world was standing still and that it is curved. That is why on one side it seems as if the sun is rising and on the other it seems as if the sun is setting. They also believed later when Ra was created that it was related to him and that the sun coming out is his birth. There are many myths regarding this.
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I don’t actually know if that’s right or not but lucky guess??
Http://www.123helpme.com/american-geographys-role-in-the-industrial-revoultion-view.asp?id=156941
An astrolabe is a primitive angle-measuring tool. It can be used to - very in-exactly! - measure the altitude above the horizon of a celestial body like the Sun, Moon or Polaris in order to calculate your position.
Medieval gunners used the astrolabe to calculate the height of towers and buildings, in order to more accurately aim their cannons.
Answer:
Portugal
Explanation:
Castile and Aragon united when Ferdinand of Aragon and Isabella of Castile married, while Portugal remained independent.