History of the Spanish language fought by these colonies in the 19th century, the new ruling elites extended their Spanish to the whole population, including the Amerindian majority, to strengthen national unity, and nowadays it is the first and official language of the resulting republics, except in very isolated parts of the former Spanish colonies. In the late 19th century, the still-Spanish colonies of Cuba and Puerto Rico encouraged more immigrants from Spain, and similarly other Spanish-speaking countries such as Argentina, Uruguay, and to a lesser extent Chile, Colombia, Mexico, Panama and Venezuela, attracted waves of European immigration, Spanish and non-Spanish, in the late 19th
Chile in accordance with the provisions of the Convention concerning the Protection of World Cultural and Natural Heritage of 1972, ratified by Chile in 1980. These cultural sites are the Rapa Nui National Park (1995), the Churches of Chiloé (2000), the historical district of the port city of Valparaíso (2003), Humberstone and Santa Laura Saltpeter Works (2005) and the mining city Sewell (2006). In 1999 the "Cultural Heritage Day" was established as a way to honour and commemorate Chiles cultural heritage. It is an official national event celebrated in May every year. Chile Chile (; ), officially the Republic of Chile