What was the significance of the plane selections made by the terrorists on 9/11

What is the difference between an independent and a dependent variable?

The difference between ptolemy iii and ptolemy xiv

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!