For the ancient Romans, the lack of local water supplies posed a natural obstacle to the growth of cities in their empire. They are best known for overcoming this obstacle by building?

John locke, an enlightenment-era philosopher, influenced the american movement for independence. locke believed that all people were entitled to natural rights. which quotation from the preamble to the declaration of independence refers to natural rights?

The president of american systems announces that all employees will be going on a trip to san francisco. some employees like the idea and some don't. according to the component of attitudes, these evaluations reflect the feelings of the employees.

“dear sir: it is with great reluctance, i trouble you on a subject, which does not fall within your province; but it is a subject that occasions me more distress, than i have felt, since the commencement of the war; and which loudly demands the most zealous exertions of every person of weight and authority, who is interested in the success of our affairs. i mean the present dreadful situation of the army for want of provisions, and the miserable prospects before us, with respect to futurity. it is more alarming than you will probably conceive, for, to form a just idea, it were necessary to be on the spot. for some days past, there has been little less, than a famine in camp. a part of the army has been a week, without any kind of flesh, and the rest for three or four days. naked and starving as they are, we cannot enough admire the incomparable patience and fidelity of the soldiery, that they have not been ere this excited by their sufferings, to a general mutiny or dispersion. strong symptoms, however, discontent have appeared in particular instances; and nothing but the most acitive efforts every where can long avert so shocking a catastrophe.” what’s the central idea?