The Great Mystery

When I think about the Salado a bunch of questions pop into my head, how did then communicate, and what happened to them? I realize I might never get my questions answered but I can try to make sense of the things I do know.The way they made their trenches for the water they must have used some sort of math and science. when they communicated they used their own type of English.they must have to know about other tribs and so that means they were using social studies. looking back on what they did and what we do now is fascinating because we are almost  connected in the things we do and the things we use like math, science, and social studies