The British used the idea of imperialism to to promote enlistment during the war by implying that if Britain lost, her empire would be lost as well.
The materials for the Ur ziggurat were bricks of mud and a material called bitumen. If the bricks were stacked with only mud between them, they would not have lasted long.
Nature. It was written by Ralph Waldo Emerson who was one of the most important figures of the Transcendentalist movement.