Historians often talk about the Columbian Exchange. What was the Columbian Exchange and what caused it? Identify and explain Three cause and effect relationships that resulted from the Columbian Exchange. You must use complete sentences when answering this question.

possible the invasion of room could have been avodiable but the people of rome were to stubboron and to wealthy the kingdoms saw them as a threat if they dialred it downa   bit ten i dont think they wouldnt failed   china was not iacvvdoaible they caused war to much and were out of hand therefor that must have happened india i dont really know it could of

is this a true or false question? ?