The romans used D) aqueducts
The State of the Union address is mandated by the Constitution.
<h3>What is a constitution?</h3>
Constitution refers to the legal document, which contains the principles procedures by which a country is being governed.
It is to be noted that any address to be made by the congress or the union, such is mandated by the constitution.
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When the things you do brings someone happiness
Spartan society operated on a system of mass enslavement. The peoples of Messenia were enslaved as helots, and worked Spartan land so the citizens spartiates could , in accordance with the rules of the mythical Lycurgus , be fulltime professional soldiers. As this went on, a series of revolts made the Spartans relise that to keep the helots pacified , Sparta would need to continue its tradition of training all young men to the point of military excellence
