an elevated plain between the Andes' two great mountain ranges
the world's largest river in volume
South America's greatest mountain range
the driest region of South America, in northern Chile and southern Peru
highlands which extend inland along Brazil's southeastern coast
a country between two larger, more powerful countries
a native group of the Colombian Andes
an event in which the eastern Pacific Ocean is warmer and the climate is much wetter than normal
a hunting land between the Andes and the Brazilian Highlands
ancient eroded highlands in southern Venezuela
South America's greatest early civilization
when a country has no border on the ocean
when Pacific waters are colder than normal
large estates spread across the Pampas
a plains area in Northeast Colombia and western Venezuela
a tropical plant with starchy roots
an organization to expand trade, improve transportation, and reduce tariffs among member countries
small farms with poor land
one of South America's great river systems, which drains the western Guiana Highlands and the Llanos, and empties into the Atlantic Ocean
wide grasslands in Argentina
the longest river in South America, which flows into the Rio de la Plata estuary between Argentina and Uruguay
a semiarid landform south of the Pampas which stretches all the way to Tierra del Fuego
ranchos, callampas, favelas
Venezuelan, Chilean, and Brazilian names for slums that surround major cities
Rio de la Plata
an estuary between Argentina and Uruguay
rock or sand layers that contain oil
a chain of high plateaus near the Guiana Highlands
the use of fear and violence as a political force
Tierra del Fuego
an island divided between Argentina and Chile
the line of elevation above which trees do not grow
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