Most ancient north american civilizations did not leave any written records behind. list two ways in which historians have been able to piece together the history of these societies.

One day as your professor is driving to work, another driver runs through a red light and hits his car. the professor is shaken up but survives the accident. however, the next time he starts to enter the intersection,he becomes nervous and fearful. soon,he starts going to work via another route to avoid the intersection even though this route adds twenty minutes to his commute in each direction. according to the principles of classical conditioning, why does the professor become scared of the previously harmless intersection? what can he do about this, as going via other route is very time consuming? be specific. break down the situation into its parts and show how the principles of learning apply.

Why might congress have had difficulty paying the war debt after the american revolution

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?