Silicate materials.
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"Cordilleras" <span>are parallel sets of mountain ranges within the Andes Mountains. A cordillera is a chain of mountain ranges - and it is an extensive chain. The term itself originates from Spanish that has the same meaning. It is applied to different ranges that includes the Andes of South America but seldom on other mountain ranges in the ridge.</span>
That region has inland rivers and ports that facilitates trade and distribution of goods, along with proximity to lumber and agricultural goods.
It may be a surprised tone or an excited tone of what happened