Matabeleland area has important gold deposits. Industries include gold and other mineral mines, and engineering. There has been a decline in the industries in this region as water is in short supply. Promises by the government to draw water for the region through the Matabeleland Zambezi Water Project have not been carried out. The region is allegedly marginalised by the government. Around the 10th and 11th centuries the Bantu-speaking Bakalanga arrived from the south and settled in Mapungubwe on the Limpopo and Shashi river valleys. Later they moved north to Great Zimbabwe. By the 15th century, the Bakalanga had established a
River systems of Thailand river systems. River systems of Thailand Thailand has 25 river basins with 254 sub-basins. Rainwater is one of the most important sources of water. Thailand's water resource per capita is less than that of other countries in the region. The two principal river systems of Thailand are the Chao Phraya and the Mekong. Together, these rivers support the irrigation for Thailand's agricultural economy. In addition to these two large systems, there are a number of other river systems and individual rivers which drain the lands within Thailand's borders into the Gulf of Thailand and the Andaman Sea. One-third of the