What is anyonym of Columbian Exchange?

An antonym of the Columbian Exchange could be considered "isolationism," which refers to a policy of avoiding interaction and trade with other countries. While the Columbian Exchange facilitated the transfer of goods, ideas, and populations between the Old and New Worlds, isolationism promotes self-sufficiency and limited foreign influence. Essentially, where the Columbian Exchange signifies connection and exchange, isolationism embodies separation and detachment.