Choose the statement that best describes population density.
an increase in the number of people living in an area over time
a decrease in the number of people living in an area over time
the number of people who live in a square mile or kilometer
the number of live births per one thousand people in a year

The answer is: [C]:  

           "the number of people who live in a square mile or kilometer" . 


Let us examine the other answer choices:

Answer choice: [A]: "an increase in the number of people living in an area over time" — refers to: "population growth".

Answer choice: [B]: "a decrease in the number of people living in an area over time" — refers to: "population decline"; or, "depopulation".

Answer choice [D]: "the number of live births per one thousand people in a year" — refers to: "birth rate". (as opposed to: "the number of deaths per one thousand in people in one year" — which refers to the "death rate"; or, "fatality rate").

To relate to humans in a relational humanly way. 

Separated the laws of islam from the laws of the nationreplaced the old muslim calender with the gregorian calender  abolished religious courts and created a new legal system based on european law as opposed to the previous system based on the islamic law code granted women the right to vote and to hold public office launched government-funded programs to industrialize turkey and to spur the economic growth attempted to modernize turkey by banning the fez which was of greek origin marriage was considered civil and not religious and polygamy was abolished women were given the right to vote in all elections