What is the Columbian Exchange and how was it positive advantage?

https://www.google.com/search?source=hp&ei=gBX5WaJiyNqYAdPug7gP&q=Columbian+Exchange&oq=Columbian+Exchange&gs_l=psy-ab.3..0j0i131k1j0l8.3560.3560.0.5705.1.1.0.0.0.0.132.132.0j1.1.0....0...1.1.64.psy-ab..0.1.132....0.RSwgm13MleI

Positive for whom?

Sorry! Positive for Go-Betweens.

The go-betweens were the merchants who made profits off the goods they sold.

Thank you

You're welcome.

Wait, can the go-betweens be what was being exchanged, like diseases.

Yes, that's possible.