when did “world” as opposed to regional history really start, and why did it start then?
1492, Columbus sailed to Asia
what has declined in number and variety continually since 1492?
plant and animal species
what is the estimated percentage of New World natives that died due to European diseases?
between 50% and 90%
what are three diseases responsible for killing Native Americans during the Columbian exchange?
small pox, chicken pox, and mumps