The United States used to be an innovator; a producer of quality goods and a leader of development for new inventions and ideas. Somewhere between the 1950's to today, that transitioned into being an Imperialism Exporter. The biggest export they provide now are military bases and war to other countries, sometimes to help one side or to take resources from the other by helping their opposition. Sometimes, both! It's not uncommon to see them arming both sides of a conflict at different times in history, and even just years apart from each other as in the cases of Gaddafi and Saddam. When there is something that the US needs from them, they will give them a supply of goods and servies, but if those countries do not accept the terms, or the type of payment that they demand for that in resources or the type of currency they want them to accept, then they will go to war with the same people they were helping just years before.
The result usually ends in a swift defeat or surrender by them because they don't have as many resources or war machines and soldiers at their disposal to go toe to toe with them for very long, and the US knows that. When the surrender terms and deals are made at the end of a war, the US and anyone who helps them usually gets a nice percentage of the spoils of war, but the people under the government who was conquered often suffer as the result of it, while a new puppet government is installed to make sure they are always compliant with any future requests or demands the US would make of them.
Very little of this goes to the American people if at all, because most of it goes to the politicians who send people to war for them and for other countries like Israel who control the US from AIPAC and other lobbyist and special-interest groups. The United States is a corporation and has been for a long time. This is business as usual for them, but few people are aware of this who live there.
It's not right, but that's just how it goes. To change this, you'd have to restore manufacturing and economic alternatives that would replace what they are getting now from other regions and make sure that the people and the economy didn't suffer if you tried to restructure the government and military to be more local and less globally imperial. I don't see that happening any time soon, but that's what would need to be done if you were to try.