<span>The biggest problem faced by the early Byzantine engineers was that the growth of the city far outpaced the growth in its resources, so water and food had to be brought from the outside.The city was also under constant threat of invasion by Germanic tribes to the north and east and needed to be heavily fortified, making moving resources into the city a bit more difficult.</span>
Probably <span>d.they wanted to protect their political and economic interests
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Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be that "</span>the federal government stopped accepting paper money for the purchase of land," since this greatly reduced confidence in the government.
1: optimistic
2: confident