Factual error: Scarlett is seen walking on the main street on the way to the hospital. You can clearly see a light bulb in one of the street lights. (01:05:25)
Factual error: When Atlanta is in chaos, there is a shot of a fire engine rushing down the street. Two shots later is a wide shot of the street with a giant red and white radio tower visible in the distance.
Factual error: Almost every crock in the background in this movie was made after 1920. I also saw clear, machine made jars. The automatic bottle machine was invented in 1901. Canning jars were crudely made and rarely ever clear in the 1860's.
Answer: If she looked rich she could trick him into thinking she wasn't marrying him for his money.