In many human societies, the act of mutually exchanging money, goods, etc. may contribute to social cohesion. Economists have elaborated the economics of gift giving into the notion of a gift economy.
Tips for printing coloring book page or coloring sheet:
Step 1: Click on "Print" link of your choice, if you want a
Football players image for coloring yourself then you need to click on "Print
Football players Coloring page (B/W)" link. If you want colored (already filled with colors)
Football players graphic to print then click "Print
Football players Coloring page (Color)".
Step 2: Now a new pop-up window will open along the
Football players image of your choice (if new window does not open-up then you may need to check your pop-up blocker settings.). Now click on "PRINT". This will open printer dialog, select your print and print.