This week we'll focus on the Bauhaus-- a German art school that existed basically between WWI and WWII, where craftsmanship and an artistic philosophy of simplicity and practicality came together to produce things like this:
(The yellow and red thing is a magazine holder.) In contrast, chairs and tables before the Bauhaus school often looked like this (Art Nouveau, centered in France/Germany):
The Bauhaus "look" came from emphasizing functionality and manufacturability; "form follows function." They were shut down in 1933 by the Nazi party for being a suspected stronghold of communist ideology, but continued to influence design worldwide.
Ikea wouldn't be the same without it. Imagine how that alone would change the look of your apartment!