Honshu the economy along the northwestern Sea of Japan coast is largely based on fishing and agriculture. The island is linked to the other three major Japanese islands by a number of bridges and tunnels. Its climate is humid and mild. The island is roughly long and ranges from wide, and its total area is , 60% of the total area of Japan, making it slightly larger than Great Britain. Its land area has been increasing with land reclamation and coastal uplift in the north, but global sea level rise has diminished these effects. Honshu has of coastline. Mountainous and volcanic,
Sar-e Pol Province age) increased from 22% in 2005 to 46% in 2011. Sar-e Pol is a mountainous province, especially in its southern part. It covers an area of 16,360 km. Three quarters (75%) of the province is mountainous or semi mountainous terrain while one-seventh (14%) of the area is made up of flat land. The province is divided into 7 districts, containing 896 of villages. The total population of the province is about 532,000. Mining and agriculture are the main industries of the province. The Government of Afghanistan signed a deal with China National Petroleum Corporation (CNPC) for the development of oil