Prints ranged from rich and India-meets-Psychedelic to modern and Art Deco, rendered in abstract circular, swirling prints.
This is not question that can be convincingly answered by abstract reasoning, or by information collected under prohibition.
What the Nazis did not care for was largely contemporary and abstract art, the likes of Chagall and Dufy and Klee, to name a few.
late 14c., originally in grammar (of nouns), from Latin abstractus "drawn away," past participle of abstrahere "to drag away; detach divert," from ab(s)- "away" (see ab-) + trahere "draw" (see tract (n.1)).
Meaning "withdrawn or separated from material objects or practical matters" is from mid-15c. That of "difficult to understand, abstruse" is from c.1400. Specifically in reference to modern art, it dates from 1914; abstract expressionism as an American-based uninhibited approach to art exemplified by Jackson Pollack is from 1952, but the term itself had been used in the 1920s of Kandinsky and others.
Oswald Herzog, in an article on "Der Abstrakte Expressionismus" (Sturm, heft 50, 1919) gives us a statement which with equal felicity may be applied to the artistic attitude of the Dadaists. "Abstract Expressionism is perfect Expressionism," he writes. "It is pure creation. It casts spiritual processes into a corporeal mould. It does not borrow objects from the real world; it creates its own objects .... The abstract reveals the will of the artist; it becomes expression. ..." [William A. Drake, "The Life and Deeds of Dada," 1922]
"abridgement or summary of a document," mid-15c., from abstract (adj.). The general sense of "a smaller quantity containing the virtue or power of a greater" [Johnson] is recorded from 1560s.
1540s, from Latin abstractus or else from the adjective abstract. Related: Abstracted; abstracting, abstractedly.
abstract ab·stract (āb-strākt', āb'strākt')
Considered apart from concrete existence.
Not applied or practical; theoretical.
A description of a concept that leaves out some information or details in order to simplify it in some useful way.
Abstraction is a powerful technique that is applied in many areas of computing and elsewhere. For example: abstract class, data abstraction, abstract interpretation, abstract syntax, Hardware Abstraction Layer.