Japan's humid and warm summer climate, as well as frequent earthquakes resulted in lightweight timber buildings raised off the ground that are resistant to earth tremors.
From the early days of European migration to America, in the 17th Century, the prototype of buildings was based on English precedent, even if mostly translated into the locally available material in abundance: timber.
After World War II great strides were made in modern Japanese architecture, not only in advanced technology, allowing earthquake resistant tall buildings, but expressing and infusing characteristics of traditional Japanese architecture in modern buildings.
The government only makes restrictive rules, they don't show you what to do so you know, OK, here's where we need this many apartments, with open space, playgrounds, kindergartens.
After about the first Millennium, Italy was the cradle of Romanesque architecture, which spread throughout Europe, much of it extending the structural daring with minimal visual elaboration.