The Columbian Exchange lead to an increase in the demand for skilled labor in Europe, because D) an abundance of raw materials from the new world needed to be made into finished goods. Many raw materials and new products were brought over to Europe from the Americas which needed to be made into finished products.
In order to keep off people who have some form of threats off the airplanes, the passenger list are maintained and mornitored by the Transportation Security Administration.
<h3>What is the passenger list?</h3>
The passenger list refers to a manifest of passenger that contains their details while on course of a journey to another location
Hence, these passenger list are monitored and maintained to keep people who are possible threats off airplanes.
Therefore, the Option A is correct.
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