Final year civil engineering students from two major public universities in Ethiopia participated in the study. A standard questionnaire was used to collect data. Descriptive statistical analysis and statistical tests were carried out using SPSS to study distribution and relationship of items. Results ...
most famous instance was the failure to maintain theGreat Dam at Maʾrib—the heart of a monumental irrigation project and one of the engineering marvels of the ancient world. Its rupture sometime in the 6th centuryceconstitutesthe symbolic end to the long era of the Yemeni trading kingdoms...