First-Wave (European) Abstraction
Wassily Kandinsky
Composition VII (1913)
Kasimir Malevich
Suprematism (1917)
Piet Mondrian
Composition of Red, Blue, Yellow, and White: Nom II
1939
VS.
Second-Wave (American) Abstraction
Arshile Gorky
The Leaf of The Artichoke Is An Owl (1941)
Jackson Pollock
Autumn Rhythm (1950)
Willem de Kooning
Two Women in The Country (1954)
Franz Kline
Untitled (1957)
Kubernesis 