Why is Chicago called 2nd City?

Related questions

1. Does it snow in Illinois?
2. How cold does it get in Chicago?
3. Did it ever snow in Chicago in June?
4. What are winters like in Illinois?
5. Is it safe to visit Chicago?
6. What is Chicago known for?
7. Is Chicago the 2nd largest city?
8. Is Chicago expensive for tourists?
9. What is the lowest temperature record in Chicago?
10. Why is Chicago called the White City?

Tags

1. #information
2. #chicago
3. #derogatory
4. #angeles
5. #nickname
6. #largest
7. #united
8. #designating
9. #after
10. #being
11. #urban
12. #before
13. #states
14. #interesting
15. #overtaken
16. #second
17. #answer
18. #began