It's obvious you bought the party line. Lets try this:
1) In economics there is a concept called supply and demand.
2) When supply is tight prices rise.
A) Rising prices are good if you are the supplier.
3) When demand falls prices fall.
B) Falling prices are bad for the supplier
4) The world oil market has a daily demand for oil.
5) We're (USA) the largest consumer of oil on the planet. So in essence we set the price of oil on the world market.
6) Oil suppliers need consumers. In fact they need as much consumption as possible to keep the price of their product high.
To support the argument that we invaded Iraq for oil, you must believe that there is the real possibility oil producing nations will stop producing or dramatically reduce production of oil. That would be extremely detrimental to their economies. In fact most, if not all, oil producing nations would suffer greater economic harm than the USA if they reduced their output of oil.
If you need further assistance with this concept let me know. While you're at it, ask yourself why we haven't invaded South Africa. They have several commodities in plentiful supply that we have virtually no supply of. These commodities are crucial to our economy, present and future. Surely it would be easy to defeat their army.
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