Why was Lincoln called Honest Abe?

Answer 1

Because he went to go buy something but he forgot to give extra change. When he Left he realized he forgot to pay extra change. Even though Abraham lived far from the store. He went back to the store and payed his extra change. That is how Abraham Lincoln has been called Honest Abe.

Answer 2

He was an honest man and, like Washington, said "I cannot tell a lie."