Complex sentence: Mythology and esoterica always informed the fascinating and turbulent imagery of his "dance macabre" paintings, and his work began to be exhibited widely and acquired by museums throughout the United States and Europe after the war.
Split into simpler sentences: Mythology and esoterica always infused the fascinating and turbulent imagery of his "dance macabre" paintings. His work then began to be exhibited widely and acquired by museums throughout the United States and Europe after the war.