In an attempt to study universal themes, readers should examine which of the following time periods? only the modern era, because it cover all that came earlier only ancient times because that is where the universal theme originated any specific time period will work because they all include the themes all time periods must be studied because no one period will cover all the themes

The fourt option is: All time periods must be studied because no one period will cover all the themes. This is because the whole history of humanity is interrelated, many cultures and their emergences, as well as their outcomes, are interrelated, even each era is told differently by different cultures, historians and contemporary kings; and since history is a product of the data that each person, with his personal way of seeing the world, it is necessary to analyze a single era with sources from various historians and regions, in order to obtain the most veridical version of a only event.

1920 census

the census was scheduled for january the 1st, as the government believed that more farmers would be in their homes by that time instead of april. the census did not ask about unemployment, the number of children, and how long was a couple married were not taken into consideration. individuals were considered as residents of the places they normally slept, not the places were they worked at or visited.

2010 census

the census was scheduled for april 1st, 2010. it was the shortest census in history: it only contained 10 questions related to name, age, gender, ethnicity, relationship, and whether the citizen owned a home or rented one. the government launched a website in order to provide the citizens with information regarding the census. there were also "teach census weeks" in schools nationwide.