<span>These actions are most often performed by an archaeologist, although it should be noted that many different types of scientists can do these things as well. </span>
Communism began around 1917 in Russia. It then spread throughout Europe.
Generally speaking, the Industrial Revolution inspired a "heightened" interest in Africa by European nations, since they looked to Africa to acquire most of their natural resources.
I would say that good judgement comes from considering the outcomes of your decisions.
This is not something that is a "talent": something that one is born with, or something that can be done without thinking too hard. Instead, one actually has to consider the outcomes of the decisions to be able to evaluate them.