Though there were ominous signs of weakness and stagnation in the Scottish economy at the beginning of the twentieth century most people in Scotland thought that the relative economic success of the nineteenth century would continue through the new century . However from the First World War onwards this period was marked by long term economic decline. This was particularly true of the inter-war period between 1918-1939 which was a time of economic of decline and crisis for Scotland. There was some stabilisation in the economy during the Second World war and its aftermath but then the pattern of continuing economic decline kicked in again from the 1950’s onwards. From the early 1980’s onwards a period of what was called deindustrialisation really got underway causing the collapse of the existing heavy industries which had developed in Scotland during the course of the nineteenth century. This economic model was partially replaced by a new service and technical orientated economic system such as Information Technology sector that developed in the Silicon Glen which developed through the 1980’s. Many problems stemming from the economic collapse of the 1980’s continue to persist in Scotland.