Which additional natural resource would be Most important to a society wanting to become industrialized

Coal steel

Explanation:

Coal is an essential fossil fuel for the industrial sector. In addition to providing a lot of energy for the operation of machinery in the steel industry, this element is indispensable for the transformation of iron ore into steel, which is an indispensable element in all industrial sectors.

For this reason, we can say that a society that wants to industrialize or improve its industrial sector needs to invest in coal mining, especially metallurgical coal.

Coal steel and iron would be the answer