Which device was used by the ancient egyptians to tell the time of day by using it to determine the length of shadows and light

Write two letters to the editor describing a specific event from the cold war, such as the korean war or the vietnarm war. imagine you are writing the letters from the perspectivees of two world leaders who are on different sides of the conflict. each letters should explain the specific point of view of that person and use historical evidence to support any cliams.