Answer:
Countries began to engage in militarism.
Explanation:
Countries began to engage in militarism as a result of alliances between European countries against one another. They began to form military forces in their countries to strengthen and protect themselves.
I think that by the middle age people are more settled; they seek more security and more stability, and striving for occupational success is sometimes combined with a risk that people at this age no longer accept.
Additionally, many people have children and grandchildren that they would like to spend time with, and they also value family and free time more than work.
Furthermore, middle age is when people's health starts to deteriorate, so they might not be physically able to work as much.
The belief-desire psychology which also known as folk psychology means the idea is that simple people understand other simple people in terms of the hypothesis or expectation that another peoples’ action and performance is the outcome of their cognitive insides which is their psychology. The beliefs and desires communicate and cooperate each other to construct intentions and these intentions can lead to actions. This is a kind of folk-theory of human behavior.
