who discovered south America , what is the extent of south America , name the 5physical features of south America , which is the driest desert in the world, name world largest waterfall and state it's location , name the deserts in south America , state the length of south America , state the breadth of south America , name highest peak in Andes , define llanos , which is the largest river in world, name 2 volcanic ranges in andes, name largest country in south America , south America has how many independent countries , which is the southern most tip of south America .

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