Causes and consequences

Historians are always trying to understand causes and consequences. Causes tell us how things happened (or changed), and consequences indicate the size and scope of the change. One would expect the biggest changes to have the biggest consequences. What would you say were the three most important changes that occurred from 8000 BCE to 1450 CE? Why were they the most important changes? What were their consequences or effects (up to 1450 CE)? What were their origins or causes?

Sample Solution