The gap between rich and poor has become more marked, even in the most economically developed nations.

I think you wanted to know whether the statement in question is true or false. Based on this assumption, i am answering the question. It is absolutely true that the gap between rich and poor has become more marked, even in the most economically developed nations. This is a growing global concern. I hope it helps.

Largely uneconomic because they provide little profit or food surplusi think so

Where's the we need to see the it could be any country!