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Both "nacían" and "nacieran" are forms of "nacer", which is often translated as "to be born". Learn more about "nacer" below.
nacer()
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
2. (to develop)
4. (to arise)
a. to grow
De ese encuentro, nació una bonita amistad.From that meeting, a beautiful friendship grew.
5. (astronomy)
