Discuss the extent to which, and the ways in which educational reform is necessary in order to fulfill contemporary social, economic and ecological expectations?

The united states constitution gives the the power to regulate interstate commerce.

Today, the a. caesar b. bishop c. pope d. tsar still heads the roman catholic church, which is centered on rome. there is no longer a byzantine emperor, but each country has its own a. governor b. patriarch c. prefect d. council to lead the eastern orthodox church there.

What greek scientist created a screw to move water for irrigation?