Also like our age, "everything seemed feasible through modern technology." Airplanes crossed oceans. Flying and automobiles became available to ordinary folk.
Below are some images from the era that appealed to me today.
The Twenties, a century ago, were obviously before I was born (1957). But I feel an affinity for that time. Surrealism, in particular, speaks to me. We will soon start a new Twenties (2020+) and I suspect it will be equally momentous. The drastic changes we're about to experience (e.g., robotic companions) may be understood by looking back at the last Twenties and drawing lessons from this time. At least I'm trying to do that.
What do you foresee in the next decade?