Adam smith said that the free market economy is regulated by : C. Self interest and competition
In free market economy, all economic activities that happen purely based on the the amount of supply and demand. Self interest such as what products you desire, how much price you can afford it will affect the amount of demand, and competition between sellers will affect the price and the amount of supply
hope this helps
Soldiers from colonies around the world fought in the war
Almost all humans to a certain extent are dissatisfied with the limited availability of resources, but if you're speaking from an academic point of view, it would be Economists, since they study choices made from this limited availability.