Original sentence: In addition, a maritime military boundary that lies fifty nautical miles (92.6 km) offshore in the Sea of Japan and 200 nautical miles (370.4 km) offshore in the Yellow Sea demarcates the waters and airspace into which foreign ships and planes are prohibited from entering without permission.Irrigated land: 14,600 km² (1993 est.It also claims an exclusive economic zone 200 nautical miles (370.4 km) from shore.It has 1673 km of land boundaries; of these, 1416 km are with China, 238 km are with South Korea, and 19 km are with Russia.It has an area of 120,540 km², of which 120,410 km² is land and 130 km² is water.Lakes tend to be small because of the lack of glacial activity and the stability of the earth's crust in the region.The 8460-km coastline of Korea is highly irregular, and North Korea accounts for 2495 km of this, roughly half.The Korean Peninsula extends for about 1000 km southward from the northeast Asian continental landmass.The North Korean government claims territorial waters extending 12 nautical miles (22.224 km) from shore
Edited sentence: In addition, a maritime military boundary that lies fifty nautical miles (92.6 km) offshore in the Sea of Japan and 200 nautical miles (370.4 km) offshore in the Yellow Sea demarcates the waters and airspace into which foreign ships and planes are prohibited from entering without permission.Irrigated land: 14,600 km² (1993 est.It also claims an exclusive economic zone 200 nautical miles (370.4 km) from shore.It has 1673 km of land boundaries; of these, 1416 km are with China, 238 km are with South Korea, and 19 km are with Russia.It has an area of 120,540 km², of which 120,410 km² is land and 130 km² is water.Lakes tend to be small because of the lack of glacial activity and the stability of the Earth's crust in the region.The 8460-km coastline of Korea is highly irregular, and North Korea accounts for 2495 km of this, roughly half.The Korean Peninsula extends for about 1000 km southward from the northeast Asian continental landmass.The North Korean government claims territorial waters extending 12 nautical miles (22.224 km) from shore