Patagonian Desert whom 3,000 ended up in Buenos Aires separated by sexes to avoid their procreation. The boundary treaty of 1881 between Chile and Argentina bought most of the desert under definitive Argentine sovereignty; previously Chile had claimed varying now Argentine areas under claims of inherited colonial titles. In the few decades before and after 1900 the less dry parts of the Patagonian steppe experienced a sheep farming boom, transforming the region into one of the world's greatest exporters of ovine products. The area is sparsely populated today and those that do live here survive mainly by the raising of livestock such
Patagonian Welsh now bilingual in Welsh and Spanish. The Welsh people first arrived in Patagonia in 1865. They had migrated to protect their native Welsh culture and language, which they considered to be threatened in their native Wales. Over the years the use of the language started to decrease and there was relatively little contact between Wales and the Chubut Valley. The situation began to change when many Welsh people visited the region in 1965 to celebrate the colony's centenary; since then the number of Welsh visitors increased. In 1945 and 1946 the BBC World Service broadcast radio shows in Patagonian Welsh.