As Korea continues its ascent as a cultural powerhouse with the likes of K-pop group BTS and Netflix series “Squid Game,” there has been increasing academic interest in examining how the country s works of modern art led to the present moment - because contemporary arts and culture don t suddenly materialize out of a void. “The Space Between: The Modern in Korean Art,” opening at the Los Angeles County Museum of Art (LACMA) on Sept. 11, is a rare survey of oil and ink paintings, sculptures and photography that all attest to woefully underrepresented chapters of 20th-century Korean art history.