During 1200 to 1400, the birthrate was much higher than the death rate, leading to population growth. Contrasting this, the 20th century saw dramatic world population growth due to decreased death rates among developed nations.
The birthrate was much higher than the death rate during the period from 1200 to 1400. The gap between birth and death rates increased, leading to population growth acceleration during this time. This contrasts with the more rapid changes in the 20th century where dramatic world population growth occurred due to significant decreases in death rates among developed nations.
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