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There is a lot of reasons why this problem can't be solved for good. One is that there will always be needs from people. The population keeps growing and growing. The resources keeps on dwindling down. Not to mention corruption. Will there be a time where we would all have to literally fight for resources?
If a country cannot manage its resources properly and the number of people in need increases, it is very likely that competition for resources will occur. There have been many cases where a country's inability to manage its resources has created serious problems, and because of this, more nations now understand the importance of better resource management, such as diversifying their economy, developing environmentally friendly technologies, implementing fair distribution policies, and even limiting the number of children per family. These measures are taken to reduce the risk of future resource scarcity and prevent countries from facing crisis situations.