Demographic Transition

Today in class, on November 13, the people who were in the play finished their tests. While they were doing this, the rest of the class researched information about the demographic transition. This is what I have found:
Demographic transition, or DT, is the transition of a high birth or death rate to a lower birth or death rate. This change is due to a developing country becoming a developed country with an industrialized ecosystem. This theory was founded in 1929 by Warren Thompson, an American demographer, a person who observes birth and death rates in developed countries over the previous 200 years. Most developed countries have completed the demographic transition and have low birth rates but most developing countries are only in the process of this. The demographic transition model can be used to predict that birth rates will continue to decrease due to countries becoming wealthier. Recent data contradicts this and suggests that at a certain point past becoming of development, the birth rates will increase. Also, in the long term, demographic transition may be reversed due to the pressure of society for higher fertility and mortality rates.