Hydroelectric power and natural gas was introduced in the late 1800s
We can infer that Japanese wanted to learn and absorb korean technologies to develop art, infrastructure and transmission of knowledge.
Japanese leader Toyotomi Hideyoshi invaded Korea between 1592 and 1598, the invasion resulted in Japan losing the war, but Hideyoshi and his generals took advantage during this period because it was the opportunity to kidnap skilled Korean craftsmen and take them back to Japan.
Japan gained cultural benefits from the spoils of war, also due to the contact with Ming China.
Korea had a refined technology of moveable type printing, during the late-sixteenth century, Japan benefited from this.
Before 1590, there was a monastic monopoly on printing in Japan.
Japanese invasion of Korea is sometimes referred to as the "Teabowl War" or the "Pottery War", because japanese soldiers made great efforts to find skilled Korean potters and transfer them to Japan once quality ceramic pottery was prized in Japan, particularly the Korean teabowls used in the Japanese tea ceremony.
Korea also made important contributions to tiling Japanese houses and castles, among the skilled craftsmen removed from Korea by Japanese forces were roof tilers . The Nagoya Castle was constructed using Korean stonework techniques.
The Athens would continuously purchase land and the Peloponnesus would be very angry.
The answer for your inquiry is suburbanization.
