Changes

==History==

==History==

The Andean region probably has been inhabited for some 20,000 years. Beginning about the 2nd century B.C., the Tiwanakan culture developed at the southern end of Lake Titicaca. This culture, centered around and named for the great city of Tiwanaku, developed advanced architectural and agricultural techniques before it disappeared around 1200 A.D., probably because of extended drought. Roughly contemporaneous with the Tiwanakan culture, the Moxos in the eastern lowlands and the Mollos north of present-day La Paz also developed advanced agricultural societies that had dissipated by the 13th century. In about 1450, the Quechua-speaking Incas entered the area of modern highland Bolivia and added it to their empire. They controlled the area until the Spanish conquest in 1525.  

The Andean region probably has been inhabited for some 20,000 years. Beginning about the 2nd century B.C., the Tiwanakan culture developed at the southern end of Lake Titicaca. This culture, centered around and named for the great city of Tiwanaku, developed advanced architectural and agricultural techniques before it disappeared around 1200 A.D., probably because of extended drought. Roughly contemporaneous with the Tiwanakan culture, the Moxos in the eastern lowlands and the Mollos north of present-day La Paz also developed advanced agricultural societies that had dissipated by the 13th century. In about 1450, the Quechua-speaking Incas entered the area of modern highland Bolivia and added it to their empire. They controlled the area until the Spanish conquest in 1525.