Llama distinguished by the inhabitants of South America are recognized as distinct species, though with difficulties in defining their distinctive characteristics. These are: The llama and alpaca are only known in the domestic state, and are variable in size and of many colors, being often white, brown, or piebald. Some are grey or black. The guanaco and vicuña are wild, the former being endangered, and of a nearly uniform light-brown color, passing into white below. They certainly differ from each other, the vicuña being smaller, more slender in its proportions, and having a shorter head than the guanaco. The vicuña lives
Chile–Peru relations return Chile agreed to build a railroad connecting the Bolivian capital of La Paz with the port of Arica and guaranteed freedom of transit for Bolivian commerce through Chilean ports and territory. But Bolivia continued its attempt to break out of its landlocked situation through the La Plata river system to the Atlantic coast, an effort that led ultimately to the Chaco War (1932–35) between Bolivia and Paraguay. In 1883, Chile and Peru signed the Treaty of Ancón in which Peru handed over the Province of Tarapacá. Peru also had to hand over the departments of Arica and Tacna. These