(Shifts in the PPF) Terrorist attacks foster instability and may affect productivity over the short and long term.

(Shifts in the PPF) Terrorist attacks foster instability and may affect productivity over the short and long term. Do you think the September 11, 2001, terrorist attacks on the World Trade Center and the Pentagon affected short and/or long-term productivity in the United States? Explain your response and show any movements in the PPF.