The correct answer is lake titicaca
The correct anwser would be climate, because the great potato famine is part of the climate, and was a deciding factor as to why they should leave. I hope you find this helpful, and good luck! :P
Land value can mean very different thinks but it terms of this context they are talking about its worth. they are not gonna stack concrete building on a good piece of land that can be used for farming. Due to the fact that it is a urban area they make Ignore a golf course or some type of nature reserve so the land isn't harmed but instead put to good use.
If this is a true or false question, the answer is false.