Complex sentence: Throughout the 1950s and on into the early 1990s, Layton travelled widely abroad and became especially popular in South Korea and Italy, and in 1981 these two nations nominated him for the Nobel Prize for Literature.
Split into simpler sentences: Throughout the 1950s and on into the early 1990s Layton travelled widely abroad and became especially popular in South Korea and Italy. In 1981 these two nations nominated him for the Nobel Prize for Literature.