After World War II, suburban development increased with incentives under the G.I. Bill, and Long Island's population skyrocketed, mostly in Nassau County and western Suffolk County. Second and third-generation children of immigrants moved out to eastern Long Island to settle in new housing developments built during the post-war boom. Levittown became noted as a suburb, where housing construction was simplified to be produced on a large scale. These provided opportunities for white World War II military veterans returning home to buy houses and start a family. In his 1966 book, My Private America (Moja prywatna Ameryka), Kazimierz Wierzyński, a Polish poet who could not go back to Poland after World War II, describes Polish farmers living there, as "walking novels".