What is the greatest contribution of photography technology to historical records?

The greatest contribution of photography to historical records is. . . Provide physical evidence of historical events. The contribution of photography technology to historical records is not great, but there is still some when you think about it, such as recording the heroic behavior of athletes. Traditionally, technology is a double-edged sword. Does the photography technology in question refer to the optimization and upgrading of photographic equipment, the shooting level of photographers, or the post-processing of photos? It is said that documentary photos are the true reflection of "the present", but how can every picture be truly reflected? Even videos can be faked a long time ago.