In the late 1800's various principles (original horizontality, inclusions, cross cutting relations, etc.) were established and used to

In the late 1800's various principles (original horizontality, inclusions, cross cutting relations, etc.) were established and used to .

Organize the order in which events occurred on earth

Explanation:

The principle of original horizontality tell us that originally all layers of the rocks were deposited horizontally due to the effect of the gravity.The term inclusion in mineralogy refer to such a material that has been trapped inside a mineral during its formation.The cross cutting relationship refer to the fact that any geological feature like a rock that cuts another geological feature will be always be younger than the feature it cuts.All of these terms give us knowledge about the order in which events occurred on the earth.