Well we're still using liquid fuel rockets to get to space and those were invented in the 20s. We're still using coal, gas, and hydro as our main energy sources. They were all around then. Radio, Airplanes, Cars, etc all were around.
I think the two biggest difference are no plastics and no electronics in these pictures. The other difference is that people are more individualistic in their appearances. They don't all wear the same clothes.
I think the two biggest difference are no plastics and no electronics in these pictures. The other difference is that people are more individualistic in their appearances. They don't all wear the same clothes.