The United States used military force against Afghanistan in the wake of the 9/11 attacks because the Taliban government would not turn over Bin Laden. The third option in the given question is the correct option. The Taliban was responsible for the 9/11 attacks and they were constantly trying to attack America in any way possible and so to stop them, the Americans attacked Afghanistan.
Freedmen needed to decide where to live and how to support themselves. Many also searched for lost family members. Not all were young or healthy enough to leave the plantations where they had been living. Some struggled with poverty and illness.
Exact PLATO answer:
Answers will vary but should touch on the fact that Black people had been "given" land to work during the War, which was now scheduled to revert back to the antebellum owners, and Black people were protesting this as unfair. Reflections should include a reference to the fact that the federal government had issued amnesty or pardons to the former landowners, so the case of ownership was not clear-cut. Reflections should also discuss the lack of options for Black people who were cheated, subjected to physical violence, or otherwise denied the rights they thought had been secured with the end of the war.