Rolling on itno modernism era.
Modernism is a philosophical movement that, along with cultural trends and changes, arose from wide-scale and far-reaching transformations in Western society in the late 19th and early 20th centuries. Among the factors that shaped Modernism were the development of modern industrial societies and the rapid growth of cities, followed then by the horror of World War I. Modernism also rejected the certainty of Enlightenment thinking, and many modernists rejected religious belief.
A general term used to encompass trends in photography from roughly 1910-1950 when photographers began to produce works with a sharp focus and an emphasis on formal qualities, exploiting, rather than obscuring, the camera as an essentially mechanical and technological tool. Also referred to as Modernist Photography, this approach abandoned the Pictorialist mode that had dominated the medium for over 50 years throughout the United States, Latin America, Africa, and Europe...
When it comes to modernism in photography, I'd like to refer to the link bellow with great examples and simple but good explanation: