What was considered a luxury 100 years ago, but is common today?

Just naming a few things:

dental care

Image from the documentary about the First World War called ” They will never grow old “.

passenger cars

Amsterdam in 1920.

Amsterdam, 50 years later, around 1970.

Back to bikes and streetcars, another 50 years later.


Mary Pickford with a movie camera in 1916.

100 years later; bystanders recording incidents with their phones.