 In the 16th century Holy Roman Empire there were no uniform dimensions, measures, and weights, which impeded trade and commerce.This work laid the foundation for Agricola's reputation as a humanist scholar, as he committed himself to the introduction of standardized weights and measures he enters the public stage and occupies a political position.In 1544, he published the "De ortu et causis subterraneorum" (On Subterranean Origins and Causes), in which he criticized older theories and laid out the foundations of modern physical geology, It discusses the effect of wind and water as powerful geological forces, the origin and distribution of ground water and mineralizing juices, the origin of subterranean heat, the origin of ore channels, and the principal divisions of the mineral kingdom.