Fossil fuels: Currently, Brazil is self-sufficient in oil, but we export petrol to buy back refined fuels (gasoline and diesel). If we were self-sufficient in fossil fuels we would be much more immune to inflation every time OPEC decides to reduce oil output.
Wheat: We are the top of the world exporting foods. We produce 6x our current need. Nevertheless, we still need imported wheat. Ukraine war and dollar variations literary affect our bread.
Fertilizers: The largest world food producer needs imported fertilizers. The irony: our main supplier is Russia. This basically prevents Brazil taking any side in the conflict and affects our (and our buyers) food prices as much as wheat.
Achieving self-sufficiency in these three areas would be like a second independence for us (first was when we got free from Portugal).