Answer:
The Mississippians were a native American culture that inhabited the Mississipi River Valley and surrounding areas from 9th till 16th century. Their culture was unique in that they created Mounds, that is man-made hills, many of them are still existing today.
Stephen F Austin was arrested for inciting riots and encouraging the Texians to defy Spanish law. Austin had gone to Mexico to meet with Santa Anna to try to work out a solution to the main complaints that Texians had. However while in town, a group had a small skirmish with some Spanish soldiers. Austin was there and seen as the head man in charge and therefore placed under arrest for the actions of people hundreds of miles away.
Frederick Douglass was born in slavery to a Black mother and a white father in Maryland. At age eight the man who owned him sent him to Baltimore, Maryland, to live in the household of Hugh Auld.