This was the enormously widespread transfer of agricultural goods between the eastern and western hemispheres that occurred after 1492.

The correct answer is:   " Columbian exchange "  .

           The "enormously widespread transfer of agricultural goods between the Eastern and Western Hemispheres that occurred after 1492"  ;

                  →  refers to the:  " Columbian exchange "  .

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answer; decreased;

answer; belief perseverance;