Translation of require in Spanish

I am trying to learn Spanish because Spanish is becoming more and more important in the USA because of immigrants. Especially here in Texas. I used to live in Nevada for many years. Boring place, gotta tell ya.
It must have taken them years and ten's of thousands of workers to accomplish the tasks of constructing such spectacular compounds. We took many pictures and walked back to the taxi.
After an hour flight and 1000km further south, we landed in Calama. It was already 9pm and it was already dark. We still weren't at our final destination, but much much closer. We took a cab again to the city center.