Only era can vary in length of time.Era means age,period which doesn't exactly define the time
Century=100 years
decade=10 years
millennium = 1000 years,
Life: everyone is entitled to live.
Liberty: everyone is entitled to do anything they want to so long as it doesn't conflict with the first right.
Estate: everyone is entitled to own all they create or gain through gift or trade so long as it doesn't conflict with the first two rights.
Religion and the pilgrimage to there holy place meka.
Most immigrants left their homes due to economic reasons. Moving to the big city usually definetely got you a job and in some cases they got to start buisnesses.
