Economic Growth

There is a certain point in every economy where it becomes impossible for larger production levels to be achieved. Larger economies with more resources have a larger curve of production possibilities, but smaller economies simply cannot produce as much, be it due to a lack of manpower, a lack of resources, a lack of technology, or a lack of any other great number of things. However, it is possible for an economy to grow, allowing for more possible production. This can be caused by things such as gaining additional resources or the development of new technologies.
Increasing resources can make possible increasing production, this much ought to be obvious. A nation, at any given time, only has so much money to dedicate to one particular thing. Since there is not an infinite amount of money, the nation must decide what it will spend its funds on to yield higher results. The other things that are outside the budget simply will not get the same attention. Sometimes this opportunity cost can be fairly steep. However, if the nation gains more money from one source or another, suddenly that is more funds that can be spent. The more funds that are sunk into a project, generally, the more revenue can be generated from it.
Of course, money is not the only resource that can attribute to economic growth. Manpower is another, arguably far more important, contributing factor. A nation could have all the money in the world, but only a handful of workers, and it would not be able to produce very much simply due to a lack of laborers. If a nation acquires additional laborers, then there are more people available to do work, which can very effectively reduce the opportunity cost. A lot more opportunity can be seized with more hands to seize them. Alternately, if a nation doesn't acquire any additional workers, but discovers ways to train them better, that will also result in economic growth. If in a car factory the employees had fairly shoddy training, and as such caused a lot of...