This is the 14030th most frequent Spanish word.
sustentan
"Sustentan" means "they sustain" or "they support."
Here, 'sustentan' is used in the sense of 'uphold' or 'justify', showing how evidence contributes to establishing or supporting an argument or theory.
Los documentos presentados sustentan la teoría propuesta.
The documents presented uphold the proposed theory.
Here, 'sustentan' is used to mean 'support' or 'maintain', indicating the act of providing for someone or something.
Ellos sustentan a su familia con trabajo duro.
They support their family through hard work.
In this sentence, 'sustentan' refers to physically supporting or holding up a structure, emphasizing a literal application.