List the five most important tangible (touchable) things (in terms of their biological and cultural impact) that were exchanged the between old and new world.

the boundarys like convergent divergent and transform it causes subduction

answer; existed; limited;

it makes your voice or whatever you are doing with it and makes it louder. doing this makes people pay attention to you and makes them hear what you say therefore they have a better chance of following you or listening to you. therfore establishing dominance.