What do you mean by the crude birth rate? What information can be gained from the country having high crude birth rate? ​

ANSWER:
Crude birth rate indicates the number of live births occurring during the year, per 1,000 population estimated at midyear. Subtracting the crude death rate from the crude birth rate provides the rate of natural increase, which is equal to the rate of population change in the absence of migration.

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Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.