Cities and Countries Part One: Social Systems
5:31
Added: 3 years ago
From: socect
Views: 712
Sort by time | Sort by thread (beta)

Link to this comment:

Share to:

All Comments (2)

Sign In or Sign Up now to post a comment!

  • this is called comparative advantage and is basic concept in economics.

    scout6686 1 year ago

  • Thanks for posting this, very helpful!!!!

    anawestar2007 1 year ago

Loading...
Alert icon
0 / 00Unsaved Playlist Return to active list
    1. Your queue is empty. Add videos to your queue using this button:
      or sign in to load a different list.
    Loading...Loading...Saving...
    • Clear all videos from this list
    • Learn more