^ In answer to your comment. Many American native dialects of smaller tribes have been lost. but:
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Quechua (Runa Simi; Kichwa in Ecuador) is a Native American language of South America. It was the language of the Inca Empire, and is today spoken in various dialects by some 10 million people (Quechuas) throughout South America, including Peru, South-western Bolivia, southern Colombia and Ecuador, north-western Argentina and northern Chile. It is the most widely spoken of all the languages of the indigenous peoples of the Americas.
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Aymara is an Aymaran language spoken by the Aymara people of the Andes. It is one of only a handful of Native American languages with over a million speakers.[1][2] Aymara, along with Quechua and Spanish, is an official language of Peru and Bolivia. It is also spoken to a much lesser extent in Chile.
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Guaraní /gwaraˈni/ (local name: avañe'ẽ [aʋaɲẽˈʔẽ]) is an indigenous language of South America that belongs to the Tupí-Guaraní subfamily. It is one of the official languages of Paraguay (along with Spanish), where it is spoken by 94% of the population. It is also spoken by indigenous communities in neighbouring countries, including parts of northern Argentina, eastern Bolivia and southwestern Brazil. It is also treated as a second official language of the Argentine provinces of Corrientes[1] and Misiones[2].
It is the only indigenous language of the Americas whose overwhelming majority of speakers are non-indigenous people.
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The total number of Mayan speakers is over 1.5 million, making this family one of the two largest in Mexico
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Nahuatl (['naː.watɬ] (help·info)[1]) is a group of related languages and dialects of the Aztecan[2] branch of the Uto-Aztecan language family. It is indigenous to central Mexico where it is spoken by more than 1.5 million people
It seems in upper NorthAmerica the Native languages have not been able to hold against english too well.
Note: Just because there are million of speakers those native languages above, with the possible exception of Guarani, are
sort of under attack. These areas are becoming less isolated internationally so more pressure is being put on native languages. Also, it seems some natives that move to cities do not want there children to speak there native lang. but to speak the prevailing lang..
Anyway, it seems the Philippines local dialects have more to worry about english, which seems to be used more in the Philippines, than spanish.