Answer:
Among the options given on the question the answer is option C.
rising life expectancy
Explanation:In the early 20th century the United States was experiencing the decline of birth rate. There were many reasons behind this. Like as world war I, the Great depression effect in the economy. But after world war II, USA experienced a great increase in the birth rate during the period of 1946 to 1964. This period is called as the Baby Boom in the history of USA. By the end of 1964, 76.6 million babies were born during the period of baby boom.
There are many reasons behind this massive increase of birth rate. Life expectancy was one of the main reason behind this. The strengthened economical condition of the USA has increased the facilities of the people. As a result couples were more willing to have babies.
Moreover soldiers returned from the world war were given the opportunity of job and social securities.As a result they got married inthe pursue of better and fulfill life. 2.2 millions couple were married in 1946 and most of them were strongly inspired to have baby to accomplish the family.
So it can be said that rising life expectancy was a factor behind the Baby Boom.
Slavery obviously. The North had more factories and they farmed food products. A large Southern export was cotton. The North also had a higher population, more cities. The South had more military bases. How many do you need?
Currently there are 3 types which include 154 district assemblies 56 municipal and six metropolitan.
And just to inform you the other answer is exact taken from another website
Kindly make me the brainliest
Answer:
This is an example of: <u>a sample survey.</u>
Explanation:
In the experiment to determine the effect of sleep deprivation on the ability of the student to concentrate definitely needs an experimental setup rather than a randomized data collection.
<em>Do to the fact that, the experimental used a small sample sized area (Students in a calculus class) to test his hypothesis shows that the setup is a sample survey. </em>
<u>This sample survey result could be extrapolated to the whoe region (the classes in the school or whole school ) to determine if there was a major significance between the two variables.</u>
