Why Did Europe's Dense Clay Soils Prove Such a Barrier

question 59

Short Answer

Why did Europe's dense clay soils prove such a barrier to farming?

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Definitions:

Quartz

A hard, crystalline mineral composed of silicon and oxygen atoms, used in making jewelry, electronics, and optical devices.

Potassium Feldspar

A group of aluminum silicate minerals that contain potassium, commonly found in igneous and metamorphic rocks.

Intrusive Area

An intrusive area is a region where igneous rocks have crystallized from magma intruding into the Earth's crust but have not erupted onto the surface.

Source Area

The geographic location where the materials of a sedimentary rock were derived from.