Answer :


They are used to help in exact change and they represent the U.S. 16th president, Abraham Lincolns, who is also on the five dollar bill.
Pennies are very helpful, though usually they don't get thought of as useful. (:
Why are they useful? Can you think of any moment when pennies have come in handy? Maybe once there was this dress you wanted to buy (sorry if u are a guy). Silky and gauzy, flowing and beautiful. Or a book or video game or ANYTHING. Anyways, you REALLY wanted it. It was $20.50 and you where ONE CENT off. Then you remembered the loose penny in your purse (or wallet) and it saved your life!! That's an example of one way a penny "saves your life" without even a thank you! (sorry, i'm just being silly)
Now to a history lesson. Pennies were important back then, too. Have you ever seen a penny meter? I live in a really old town and they still have them. They are the meters, you know, like when you park, and you put your quarter in? Except you put your penny in. How weird is that? But anyways, pennies were very important back then because if you didn't have one in handy, you couldn't park. Hope this makes sense if it doesn't, ask me, I can clarify it. Sorry for being silly I'm just in a silly mood. (: