They are natural gas, and other minerals. I think one of them is phospate....
Petroleum is one of Mexico natural resources but not the most important
Buffalo and water were the most important Natural Resources for the Great Plains Indians.
Oil
the most important natural resource in Puerto Rico is Elkhorn coral
the sun
the buffalo is the most important
Some of West Virginia's most important Natural Resources are coal, oil, and natural gas.
The natural resources are geothermal, hydroelectric, solar, and wind power. These are important because they produce efficient energy and most important of all they are renewable.
oil and natural gas
Libya's most important natural resources are oil and natural gas. The country has the largest proven oil reserves in Africa and significant natural gas reserves. These resources are crucial to Libya's economy and have historically been major drivers of its GDP.
Egypt needed Nubian's natural resources Egypt needed Nubian gold Egypt needed help fighting off invaders.
Buffalo and water were the most important natural resources for the Great Plains Indians.