Why did daylight savings time start?

Related questions

1. Is Chicago EDT time?
2. Is Chicago ET time?
3. Does Chicago fall back?
4. Is there a time change in Illinois?
5. Do we gain or lose an hour in March 2019?
6. Is Chicago in the East or West?
7. Does time go forward or back?
8. What kind of climate does Chicago have?
9. What does 10 am CST mean?
10. Which states do not observe Daylight Savings Time 2018?

Tags

1. #states
2. #march
3. #shift
4. #after
5. #summer
6. #sunshine
7. #defined
8. #first
9. #addition
10. #standard
11. #hours
12. #daylight
13. #united
14. #proposed
15. #saving
16. #enacted
17. #congress
18. #hunting
19. #zones