The Columbian Exchange was the widespread transfer of plants, animals, culture, human populations, technology, and ideas between the Americas and the Old World in the 15th and 16th centuries, related to European colonization and trade after Christopher Columbus's 1492 voyage
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Answer:
Bill of rights was necessary to safeguard individual liberty.
The first ten amendments protect basic freedoms; especially of the minority groups. It was added to the Constitution to protect the people from the national government from having too much power. Adding the Bill of Rights helped change many people's minds to ratify the Constitution.