What most caused the decreased use of chemical photographic negatives near the end of the twentieth century?

The emergence of new digital technology  caused the decreased use of chemical photographic negatives near the end of the twentieth century

There are many advancements in technologies that are used in various fields. The technology that is being used in the photography is also advanced over years. The advancements in photography has drastically improved and it is still being improved in the present time.

The emergence of the new digital technology is the main reason for the declined use of chemical photographic negatives  towards the twentieth century end. The digital photography makes use of the cameras that has electronic photodetectors for the purpose of capturing photographs or images. These can be stored after digitization that can be viewed later.  

answer; a cost benefit analysis;