engine-
noun
A machine for converting any of various forms of energy into mechanical force and motion. also: a mechanism or object that serves as an energy source. black holes may be the engines for quasars. 2. : a railroad locomotive.
Home to more than 65 percent of the world’s known reserves, could Latin America’s “Lithium Triangle” formed by Argentina, Bolivia and Chile become the Saudi Arabia of the 21st century?
https://webdoc.france24.com/lithium-energy-automobile-industry-bolivia-argentina-chile/