The period since 1939 has seen more rapid and significant change than any other time in Welsh history. Wales has developed a more assertive identity of its own and some of the apparatus of a nation state. Yet its economy has floundered between boom and bust, its traditional communities have been transformed and the Welsh language has been undermined by a globalizing world.
Er 1939 gwelwyd newidiadau cyflymach a phwysicach nag a welwyd mewn unrhyw gyfnod arall yn hanes Cymru. Bellach mae gan Gymru ei hunaniaeth unigryw. Er hyn nid yw ei heconomi wedi ffynnu gydol yr amser, mae ei chymdeithasau traddodiadol wedi'u trawsffurfio ac mae'r iaith Gymraeg wedi'i thanseilio.
