Demographics of Chile helps explain this relative lack of differentiation, which was maintained by the national reach of radio, and now television, which also helps to diffuse and homogenize colloquial expressions. There are several indigenous languages spoken in Chile: Mapudungun, Quechua, Aymara and Rapa Nui. After the Spanish invasion, Spanish took over as the lingua franca and the indigenous languages have become minority languages, with some now extinct or close to extinction. German is spoken to a great extent in southern Chile, either in small countryside pockets or as a second language among the communities of larger cities. Through initiatives such as the
Economy of Chile the northern half of Chile cultivation is highly dependent on irrigation. South of the Central Valley cultivation is gradually replaced by aquaculture, silviculture, sheep and cattle farming. Chile is the second largest producer of salmon in the world. As of August 2007, Chile's share of worldwide salmon industry sales was 38.2%, rising from just 10% in 1990. The average growth rate of the industry for the 20 years between 1984 and 2004 was 42% per year. The presence of large foreign firms in the salmon industry has brought what probably most contributes to Chile's burgeoning salmon production, technology. Technology transfer