Photography has changed the world by allowing people to see distant places and foreign people. Photography made images more democratic. During the Middle Ages and Renaissance, only members of the upper classes could have their image made. By the middle of the 20th century, average citizens could take a picture and share their experience with the world.
Photography was invented between the 1830s and 1840s. It made it possible for people to see the world in new ways, and it changed the discourse about topics such as war. In October 1862, photographer Mathew Brady had a famous photography exhibition at Brady's New York Gallery called "The Dead of Antietam." The pictures showed the aftermath of the bloodiest Civil War battle. For the first time, the general public could see the atrocities of war. The pictures were controversial and stirred much public conversation. Many people expressed horror at what they had seen, while others were fascinated.
Photography's impact increased with the invention of the Polaroid SX-70 in 1972. The pictures could be taken with the click of a button and developed instantly. The ease of use made photography more popular to everyday people. The iPhone was invented in 2007 and also had a major impact on photography. It made it possible to instantly share photos with the world. People could take pictures spontaneously without always carrying an additional camera. This has made pictures ubiquitous throughout society.