What are the similarities of a sweet 16 and quinceaneras

They are both parties which celebrate a girl's coming of age.

Sweet sixteens are the more Americanized parties, where at age 16, a girl usually has a big party.

Same is for quinceañeras, which celebrate a girl who is 15 in the Latin American community.

They are both big parties, involving lots of family, as it is a big deal to turn that age.

Hope that helps!

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Creo que es selva o isla es una parte de la tierra