As for the rivers, the colonists were aware you must have water to successfully maintain life whether it be human life or plant life, it is necessary. Also being close to water helped them in the workforce, like carrying out trade or fishing It was a "win win" for them.
The answer to your second question is D.) Welfare
Aristarchus’ only extant treatise is “On the Sizes and Distances of the Sun and Moon.” In it he calculated the diameter of the Sun as about seven times the diameter of the Earth, thus estimating the Sun’s volume as about 300 times the volume of the Earth
The correct answer for the question that is being presented above is this one: "The program called for increased government spending." one reason some people supported supply-side economics and others opposed it is that <span>The program called for increased government spending.</span>
I think it is B. Fait money only has value as a medium of exchange but idk put it and see if im right I researched it and got that so let me know if im right :)