Complex sentence: They were called'Artists' Squares' and, often printed on rayon due to shortages of materials immediately following the war, they brightened up drab outfits in a way that came to be universally loved by women across Europe and America.
Split into simpler sentences: They were called'Artists' Squares' and, often printed on rayon due to shortages of materials immediately following the war. They brightened up drab outfits in a way that came to be universally loved by women across Europe and America.