Answer: Oil
Step-by-step explanation:
The Gulf of Mexico, north sea and Persian gulf are some of the important resources of oil. They have a abundant of fossil fuel inside these places.
The formation of the fossil fuels takes millions and billions of year to form. These places have a abundant of fossil fuels as it is left untouched and the oil is extracted time to time for the commercial purposes.
These places are rich in resources and have high economical value.