What is one reason we don't know what happened to these ancient Southwestern cultures? Choose the best answer.
They left no evidence behind.

What is the importance of the american anti slavery society founded

How did the industrial revolution give an advantage to industrialized european nations over non-industriallized nations?

If any state tribunal decides a federal question and the litigant has no further remedy within the state court system, from which of the following remedies could the litigant possibly benefit? a. a hearing by a us district courtb. a hearing by a federal court of appealsc. a hearing by the us supreme courtd. a congressional vote b, the correct one!