In this stage of the DTM, the CBR remains high, but the CDR has rapidly decreased. What is this stage of the DTM
Stage 2
What is the first stage of the ETM
Pestilence and Famine
What is the distance decay principle
Further away a place is, the less likely you are to move there

Stage 1
In this stage, there is a Declining CBR, low CDR, and steady population growth
Stage 3
How did Doctor John Snow prove that Cholera was the disease spreading across a region of London, not "sins" causing people to die
Overlayed a water well map over the neighborhood to show there was tainted water
What is the Quota Act of 1921?
Ended unrestricted immigration to the United States

Stage 2
What are two reason for the change in birth rate from DTM 1 to DTM 2
Many children needed for farming. Start of medical advancement. Religious/ social encouragement. No family Planning
Cardiovascular, cancer, etc.
What are the three preferences for entrance to the United States?
Family reunification, skilled workers, diversity
How does Mexico move from stage 2 to stage 3?
Family planning, women entering the workforce
When moving from stage 4 to stage 5 in the DTM, what would be a driving factor for that to happen?
Family planning, Medical Advancement, Societal Pressure
What type of diffusion is the Zika virus & what stage of the ETM will the Zika virus be?
Relocation & Stage 3
Explain the process of Chain Migration
One person gains citizenship, then their parents/siblings/cousins gain an advantage to earn citizenship because of the single person who became a us citizen
What population pyramid stage is Japan
Stage 4
Name two countries that are in stage 4 of the DTM & heading to stage 5
Japan & South Korea
What continent did Ebola originate & why has it only affected this continent?
Africa & close proximity to bats & cultural uses for them
Explain the difference between interregional & Intraregional migration
Interregional - One region to another (east coast to west coast)
Intraregional - Movement within a region

What stage is Italy in and Why is the male population so low at the 80-95 range?
Stage 4 WWII