Because times were booming. The 1920s was an age of prosperity, happiness and good business.
Answer:
Using the stars as storytellers in the past is perhaps the most often used method of entertainment before the advent of movies, TV, and the internet. People recognized a link between the stars in the sky and different periods of the year, such the seasons changing, and thus began using the sky as a calendar. Their worship of the sky resulted in the construction of observatories and temples, which directed ceremonial skygazing.
Religious freedom. they were mostly europian
this may have different names depending on what nation or country your talking about but in the US it's conscription
