The northeastern region, by far the

The northeastern region, by far the largest region, is a one-third of the country.

Major rivers are the Mekhong, the Chi, the Mun and the Songkhram. By the end of the Mesozoic Era, the northeast plateau had sunk to form a shallow sea. After the seawater evaporated and the salt was absorbed into the sedimentary rocks, the plateau became a basin of sandy soil.

The soil did not have water-holding capacity and was leached of its mineral nutrients except in the alluvial area.

ผลลัพธ์ (ไทย) 2:

The Northeastern Region, by Far the largest Region, is a one-third of the Country. Major rivers are the Mekhong, the Chi, the Mun and the Songkhram. By the end of the Mesozoic Era, the northeast plateau had sunk to form a shallow sea. After the seawater evaporated and the Salt was absorbed Into the sedimentary Rocks, the Plateau became a basin of Sandy soil. The soil did not have Water-holding capacity and was leached of its nutrients except in the alluvial Mineral Area.