The answer is voice. It expresses the sentiment that many
people have an opinion about. When
someone voices an opinion shared by many, people rally around that and their
opinions and thoughts are now heard by society which means it is something they
feel strongly about.
When two or more people are communicating but one of the parties is not truly responding but using cliches, usually he or she uses impersonal responses. This type of messages involve the use of generalizations, intellectualized phrases and statements that not come from personal experiences, which avoids an efficient communication.
That would be trading and farming.
The Columbian exchange was the arrival of new species in the Old and the New Worlds. Among the many species that arrived in the New World were the bacteria and viruses that were causing many illnesses but to which the Old World people were immune. The Native Americans were not immune so many of them, by some estimates even 90 %, died.
