Of the various forms of altered consciousness, we spend the most time

An altered consciousness is a state of which a person may be in a trance state, sleeping state or drug induced hallucinogenic state. If an individual is at this form, they are likely to spend most of their time in the second stage of sleep by which the person experience sleep spindles or that he or she is undergoing to a light sleep.

in an effort to stem the tide of refugees attempting to leave east berlin, the communist government of east germany begins building the berlin wall to divide east and west berlin. construction of the wall caused a short-term crisis in u.s.-soviet bloc relations, and the wall itself came to symbolize the cold war.