What do these cities have in common?

Question

1. Los Angeles

2. Washington, D.C.

3.Miami

4.Seattle

5.Boston

6.Anchorage

7.Chicago,

8.San Diego

9.New York

10.Baltimore

11.Honolulu

12.Houston

13.SanFrancisco

14.St.Louis

15.Philadelphia

16.Pittsburgh

17.NewOrleans

18.Cleveland

19.Detroit

Answer 1

They're all in America! Good question! My guess is that they are all port cities. All are on major bodies of water, be it oceans,lakes,harbors,bays,or rivers.

Answer 2

Please study to find-out these towns / cities, on a ATLAS, only ! It is a 'gun', with us only !

Answer 3

Easy:  they're all in the United States of America.

I was going to say they all have professional sports teams, but Anchorage doesn't have any.  Neither are they the largest cities in their states (there are three cities in California on this list).  They're also not the 19 largest cities (Anchorage is on this list, Dallas isn't).